So 6 in.w x 4 inches in.h
what will it be 30 inches wide
[tex] \frac{4}{6}= \frac{x}{30} [/tex]
what we are doing right now is putting height over width, then the same thing to the other height over the width
now we cross multiply
(4) (30) = (6)(x)
120 = 6 x
divide both sides by 6 to isolate the variable
20 = x
The height of the poster, that has the width of 30 inches, will be 20 inches
Hope this helps :)
