Ratio Problem from my math homework

Question

An equilateral triangle and a square have the same perimeter of 12 inches. What is the ratio of the side length of the triangle to the side length of the square? Express your answer as a common fraction

Basically I try to do it but it says i'm wrong so ya

Answer 1

let s = side of square and t = side of triangle

4s = 3t=12

t/s =4/3