Array with Sum and multiply

[Eric]

Wondering if there is a way to use an array formula for this?

I'm trying to multiply data for several months (data arranged in columns) by
values contained in one column. In the example below I want to multiply .5
by 100, 125 and 75, .7 by 100, 125 and 75, etc. Then take the sum of these
products. I was thinking {sum(b1:d6*a2:a6)} would work, but it returns an
error.

Multiplier Jan Feb Mar
0.5 100 125 75
0.7 100 125 75
0.9 100 125 75
0.4 100 125 75
0.3 100 125 75


Any help on this is greatly appreciated.

Thanks

 

[Joel]

Change B1 to B2

 

[Eric]

Yes, sorry B1 should have been B2 in my question, but still need help on this.

 

[muddan madhu]

Multipliers are in col A then
put this formula in Col E =SUM(A2*{100;125;75}) and drag it down

 

[Joel]

You can use either SUM or SUMPRODUCT. When you use SUM you need the equal
sign and DON'T type the Curly bracket. These must be enter by typying Shift-
Cntl- Enter

 

[muddan madhu]

try this

=SUM(SUM(A1:A5)*{100;125;75})

Multipliers are in col A then
put this formula in Col E =SUM(A2*{100;125;75}) and drag it down

 

[xlmate]

try this

=SUMPRODUCT((B22)*A2+(B33)*A3+(B44)*A4+(B55)*A5+(B66)*A6)

Is this what you want?

Pls click Yes if this help

cheers

 

[Rick Rothstein]

What about this way...

=SUMPRODUCT(A2:A6*B26)

 

[Joel]

The function posted will work if the B1 is changed to B2. Smproduct works
much simplier than your example

=sumproduct(b1:d6*a2:a6)

 

[Eric]

Thanks! xlmate's formula did work, but I have many more rows than I
illustrated in my example, so Joel, your formula will work very nicely.

Thank you both for your help.

 

[Harlan Grove]

What about this way...

=SUMPRODUCT(A2:A6*B26)

Or

=SUMPRODUCT(A2:A6,B26)

 

[Rick Rothstein]

I get a #VALUE! error with the comma form of the formula that you posted (whereas the multiplication form I posted works fine for me).

 

[Harlan Grove]

I get a #VALUE! error with the comma form of the formula that you posted
(whereas the multiplication form I posted works fine for me).

My fault. I missed that the second spanned columns B to D.