document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=162606>Question 162606</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In your own words, explain in detail why we can determine  which of two fractions is greater by using the cross-multiplying method. What is the rationale behind this method? What are we really doing when we cross-multiply in order to compare fractions? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #119842 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=119842\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In your own words, explain in detail why we can determine  which of two fractions is greater by using the cross-multiplying method. What is the rationale behind this method? What are we really doing when we cross-multiply in order to compare fractions?<BR>\n" );
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document.write( "Typical Proportion: a/b = c/d<BR>\n" );
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document.write( "Multiply both sides by bd to get:\r<BR>\n" );
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document.write( "(bd)(a/b) = (bd)(c/d)<BR>\n" );
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document.write( "Cancel where you can to get:<BR>\n" );
document.write( "ad = bc (This is the cross-multiplication pattern)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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