matrix multiplication with factor of array matlab -

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have matrix have size x y , matrix b x 1

in matrix b have element represent kind of co factor correspondent matrix want program * b ( * factor of each array )

example 

a (4 * 3) = [ 2 4 6 ;               5 10 15 ;                7 11 13 ;               1 1 1];  b (4 * 1) = [ 4 ; 1/5 ; 3 ; 7];  want * b [ 2*4  , 4*4    , 6*4                    ;5/5  , 10/5   , 15/5                    ;7*3  , 11*3   , 13*3                    ;1*7  , 1*7    , 1*7];  expected result = [ 8 16 24 ; 1 2 3 ; 21 33 39 ; 7 7 7];

i try use scalar multiplication didn't work since scalar multiplication must have same size of array how solve this?

use bsxfun desired result of multiplying row elements of a single row value in b

bsxfun(@times,a,b)

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