![\"\"](\"/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_pro1.gif\")
Ratio of the second fraction
\![\"ratio](\"/userfiles/image/Library/Algebra1/ratio_of_fractions_pa114_pro1_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=c16ba529dc1c35f44608dd53a3a2302b.png\")
According to Means-extremes Property of proportion: If ![\"\"](\"/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=1afc90d0365adc9e6198146a7dc3e59e.png\")
(Cross products)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9bbc85eceb5ddba862d8b0feb7e2e5eb.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=41b42618d05ee82d6ca099fa692ec8ab.png\")
)
The cross products are equal. So, the ratios form a proportion.
\![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
No, the ratios form a proportion.
\