Why is x = 4 a solution to the proportion StartFraction 14 over x EndFraction = StartFraction 56 over 16 EndFraction? because 56 divided by 14 is equal to 4 because 56 divided by 16 is equal to 4 because if you substitute 4 into the equation for x and cross multiply, you get 196 = 196 because if you substitute 4 into the equation for x and cross multiply, you get