Similar rectangles have or form similar ratios. Hence to solve this, you have to get the ratio of the measurements: Let N be the length of the similar rectangle 5/7 = 15/N 5(N) = 7(15) -> cross multiply 5N = 105 5N/5 = 105/5 -> divide both sides of the equation by 5 N = 21 Therefore, 21 meters in the length of the similar rectangle To check - 5/7 = 15/21 (cross multiply) 105 = 105
