SOLUTION: Do the ratios 2:4/5 and 3/4:2/10 form a proportion?

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Question 1153257: Do the ratios 2:4/5 and 3/4:2/10 form a proportion?


Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
That means, asking if is true. The test is simple arithmetic of fractions. Enough or not?
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.

By the definition, a proportion is an equality of two ratios.


So, you calculate one ratio,   =  =  = 


and another ratio,   =  =  = .


Then you compare these two ratio (expressed in simplest form), and what you see ?


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