To find the number of inches per foot, we can analyze the equation \( 4y = 48x \).
Here, we can interpret \( y \) as the number of inches and \( x \) as the number of feet. Under the scenario described, we can set \( x = 1 \) (1 foot) and \( y \) needs to be determined in inches.
Substituting \( x = 1 \) into the equation gives us:
\[ 4y = 48(1) \]
\[ 4y = 48 \]
Now, we solve for \( y \):
\[ y = \frac{48}{4} \] \[ y = 12 \]
Thus, there are 12 inches in 1 foot.
The final answer is: 12 inches per foot.