What is the numerator or denominator of 4/5

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square