Hey Steve,
in the proportion 9/x=15/25 would you cross multiply 9 and 25 and x and 15???
9/x = 15/25
9/x * 25x =15/25 * 25x
9 * 25 = 15x
15 = x
Hey there! To solve a proportion, you can indeed use the method of cross-multiplication. Cross-multiplication is a technique that allows you to find the value of the unknown variable in a proportion.
In this case, the proportion is 9/x = 15/25. To cross-multiply, you multiply the numerator of the first fraction (9) by the denominator of the second fraction (25), and vice versa. Then, you set the resulting expressions equal to each other.
So, using cross-multiplication, you would have:
9 * 25 = x * 15
225 = 15x
To solve for x, divide both sides of the equation by 15:
225 / 15 = x
The result is:
x = 15
Therefore, in the proportion 9/x = 15/25, the value of x is 15.