According to Means-extremes Property of proportion: If , then ad = bc.
(Cross products)
(Multiply: )
(Simplify)
The value of .
![\"\"](\"http://c4anything.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"http://c4anything.com/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4a768eb71c3beb8a2b4c32e7be25eb53.png\")
, then ad = bc.![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e92957cabdd9181d502d8e71a6da5a13.png\")
(Cross products)![\"\"](\"http://c4anything.com/userfiles/image/steps_images/step2.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4ee88371df18066844bbb34a04b3ba0f.png\")
(Multiply: ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e8d5ded7392b28c42d506c44b0605b8e.png\")
)![\"\"](\"http://c4anything.com/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b987e62c7e279160697698c64e0e3824.png\")
(Simplify)![\"\"](\"http://c4anything.com/userfiles/image/steps_images/solution.JPG\")
.