SOLUTION: Hat size 6 7/8 head circumference 21 3/5 head circumference 55. Use ratio and proportion to complete the following 6 7/8 21 3/5 55 7 3/4

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Question 375596: Hat size 6 7/8 head circumference 21 3/5 head circumference 55. Use ratio and proportion to complete the following
6 7/8 21 3/5 55
7 3/4
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Hat size 6 7/8
head circumference 21 3/5
head circumference 55.
hat size = x
...
6 7/8 = 55/8
21 3/5 = 108/5
...
%2855%2F8%29%2F%28%28108%29%2F5%29=+x%2F55
...
%2855%2F8%29%2A%285%2F108%29=x%2F55
...
multiply by 55
55%2A%2855%2F8%29%2A%285%2F108%29=x%2A%28cross%2855%29%29%2F%28cross%2855%29%29
%2855%2A55%2A5%29%2F%288%2A108%29=x
x=17 1/2
...
m.ananth@hotmail.ca