![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
An equation stating that two ratios are equal is called a proportion.
\ \Method 1:
\Ratio of the first fraction
\![\"ratio](\"/userfiles/image/Library/Algebra1/ratio_of_fractions_pa114_pro3.gif\")
Ratio of the second fraction
\![\"ratio](\"/userfiles/image/Library/Algebra1/ratio_of_fractions_pa114_pro3_1.gif\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Check the ratios of fractions.
\The ratios are equal. So, the ratios form a proportion.![\"\"](\"/userfiles/image/steps_images/step3.JPG\")
Method 2:
\Write the equation ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4b66ae81b429a7425526d4d1f29ccea8.png\")
According to Means-extremes Property of proportion: If ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4a768eb71c3beb8a2b4c32e7be25eb53.png\")
,
then ad = bc.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bf04fb30c970b25920d40696dae5d669.png\")
(Cross products)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=494e41e3f3b0747de40d4bb4c092f676.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8f9343214f00607008c064ffe3d71596.png\")
)
The cross products are not equal. So, the ratios form a proportion.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
No, the ratios form a proportion.