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set up a proportion

by Emone Vinson
(Houston, Tx)










































While campaigning for class president, Jerry made posters to hang at school and stickers to pass out to the students. The stickers were 4 inches wide by 6 inches longs. The posters were proportional to the stickers, and they were 18 inches wide. How long were the posters?

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Dec 29, 2011
Proportional Values
by: Staff


Question:

by Emone Vinson
(Houston, Tx)

While campaigning for class president, Jerry made posters to hang at school and stickers to pass out to the students. The stickers were 4 inches wide by 6 inches longs. The posters were proportional to the stickers, and they were 18 inches wide. How long were the posters?


Answer:

To solve this problem, set up a proportion:

(poster length)/(poster width) = (sticker length) /(sticker width)

(poster length)/(18) = (6) /(4)

To solve for the poster length, multiply each side of the equation by 18

(poster length)/(18) = (6) /(4)

[(poster length)/(18)]*18 = [(6)/(4) ]*18

(poster length)*(18/(18) = [(6)/(4) ]*18

(poster length)*(1) = [(6)/(4) ]*18

poster length = [(6)/(4) ]*18

poster length = 27



the final answer is: Poster Length = 27 inches


Thanks for writing.


Staff
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