Solving proportions using cross products 1/2=x/18

Answer 1

To solve the proportion 1/2 = x/18 using cross products, we multiply the numerator of the first fraction (1) by the denominator of the second fraction (18) and set it equal to the product of the denominator of the first fraction (2) multiplied by the numerator of the second fraction (x).

So, the equation would be:

1 * 18 = 2 * x

18 = 2x

Next, we divide both sides of the equation by 2 to isolate the variable x:

18/2 = 2x/2

9 = x

Therefore, x = 9.