Let's denote the cost of a pound of raisins as \( R \) and the cost of a pound of nuts as \( N \). We are given that the total cost of the raisins is \( 0.2727272727272727 \) (or \( \frac{3}{11} \) when converted to a fraction) of the total cost of the mixture.

The total cost of the raisins is \( 3R \), and the total cost of the nuts is \( 4N \). The total cost of the mixture is \( 3R + 4N \).

According to the given information:

\[ 3R = \frac{3}{11} (3R + 4N) \]

Now, let's solve for the ratio \( \frac{N}{R} \):

\[ 3R = \frac{3}{11} (3R) + \frac{3}{11} (4N) \]
\[ 3R = \frac{9R}{11} + \frac{12N}{11} \]
\[ 3R - \frac{9R}{11} = \frac{12N}{11} \]
\[ \frac{33R}{11} - \frac{9R}{11} = \frac{12N}{11} \]
\[ \frac{24R}{11} = \frac{12N}{11} \]
\[ 2R = N \]

So the ratio of the cost of a pound of nuts to the cost of a pound of raisins is \( \frac{N}{R} = 2 \).
건포도 1파운드의 비용을 \( R \), 견과류 1파운드의 비용을 \( N \), 건포도 1파운드의 총 비용을 \( 0.2727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727272727