how do i slove proporations

Question

anonymous · Answer

i can help one sec plesz

anonymous · Answer

ok thx:)

saifoo.khan · Answer

http://www.youtube.com/watch?v=P_aQPxr2G_4

osanseviero · Answer

it is really easy....lets say that we have a

3        1
-  =    -
x        2

So we want to know x. 

1. First we multiply 2 and 3, having a 6. We divide it by 1. Use the video, it is good too

anonymous · Answer

no that didnt help me btthx yuh vry muc

osanseviero · Answer

http://www.aaamath.com/rat-prop-crossx.htm will be help then

anonymous · Answer

sorry then i cant help thats what i was gone tell yu

osanseviero · Answer

As a last option, if you dont understand ample mathematical vocabulary, khan academy will explain step by step and why and easily http://www.khanacademy.org/video/find-an-unknown-in-a-proportion?playlist=Developmental%20Math

anonymous · Answer

thx yuh gus )

anonymous · Answer

welcome!!!

anonymous · Answer

$$\frac{3}{x} = \frac{1}{2}$$$$\implies  (2x)\frac{3}{x} = (2x)\frac{1}{2} $$$$\implies 6 = x$$

Remember that you can always multiply both sides of the equation by the same thing.

osanseviero · Answer

yeah...i was just showing in cross multiplication

anonymous · Answer

@polpak i like how you explain it out yur work is great!!!:) and  tiffany do yu get it now

osanseviero · Answer

i agree with neasha...polpak way of explaining is amazing

anonymous · Answer

yea its GREAT

anonymous · Answer

whats great

anonymous · Answer

how  polpak explained proportion teew yu