# Specific range of numbers is given, trying to get another number within same range

I'm trying to calculate the width of an HTML element based on the window size.

Here's what I have. These width values (first value) accurately match with the width the HTML element must be (second value). However I need to get a formula for this to be able to set the width of the HTML correctly according to any possible window size.

window width / HTML element width

• 1663 = 1916
• 1221 = 1692
• 1119 = 1641
• 1038 = 1602
• 630 = 1396

• 1500 = ????

• 1400 = ????
• 2000 = ????

I've been staring at this four hours but I just can't wrap my head around it..

Any help would be appreciated.

Thanks in advance, Roel

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All of your equations are false. $1663$ is not the same as $1916$", and the $=$ sign does not mean "corresponds to, in some unspecified context-dependent way". – Henning Makholm Apr 26 '12 at 12:22

## 1 Answer

Linear regression gives: $m=0.5030755166$ $c=1078.8117490$ with $R^2=0.9999778405$. This gives the desired values as

• 630 1396
• 1500 1833
• 1400 1783
• 2000 2085
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 Thanks Shitikanth, glad someone knows how to do this :) .. But which formula can I use to get the element width for any window width my users may be using?? How can I implement this programmatically??? - So I mean: x (element width) = Thanks! – Roel Apr 26 '12 at 14:57 y= mx+c with m and c given above (x is the window width and y is the HTML window width) – Shitikanth Apr 26 '12 at 15:56 I'm sorry I'm a complete mathematics noob :P .. What does mx mean? Do i have to multiply m with x before adding it to c? --thanks again – Roel Apr 26 '12 at 16:34