Converting 2x + 3y = 4 to polar form with a constant term

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iggybaseball
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How would I change: 2x+3y=4
into polar form? I understand how to solve for polar form but the 4 without a variable is confusing me.
 
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[tex]2 r cos \theta + 3 r sin \theta = 4[/tex]
[tex]r(2 cos \theta + 3 sin \theta) = 4[/tex]
[tex]2 cos \theta + 3 sin \theta = 4/r[/tex]
[tex]\frac{4}{2 cos \theta + 3 sin \theta} = r[/tex]

whats wrong with that?
 
Thank you I feel ashamed that such a simple problem stumped me. I was thinking to hard lol. Thanks again