document.write( "Question 104719: explain the general procedure used to identify and set up a proportion problem.
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Algebra.Com's Answer #76250 by elima(1433) $\"\"$ $\"About$

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A proportion is 2 ratios that are equal to each other, proportions can be solved by cross multiplying.
\n" ); document.write( "ex:
\n" ); document.write( "If the ratio is 2 boys to 3 girls, how many girls would there be if there are 60 boys?
\n" ); document.write( "First the ratio we are given is $\"3%2F2\"$ , now we are given there are 60 boys. So the proportion we set up to solve would be;
\n" ); document.write( " $\"3%2F2+=+x%2F60\"$
\n" ); document.write( "60 is on the bottom because that is where we have the amount of boys in the ratio;
\n" ); document.write( "now cross multiply;
\n" ); document.write( " $\"3%2F2=x%2F60\"$
\n" ); document.write( "180=2x
\n" ); document.write( "90=x
\n" ); document.write( "So there are 90 girls.
\n" ); document.write( "Hope this helps
\n" ); document.write( ":)
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