[tex] \frac{1}{4} [/tex] = [tex] \frac{3.2}{x} [/tex]
Cross multiply..
1x = 12.8
Divide 1 from both sides
[tex] \frac{1x}{1} [/tex] = [tex] \frac{12.8}{1} [/tex]
x = 12.8
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Let's check our answer now..
[tex] \frac{1}{4} [/tex] = [tex] \frac{3.2}{12.8} [/tex]
Cross multiply
12.8 = 12.8
Your answer is 12.8 :)
