Respuesta :

W=21
To get from 4 to 28 you multiply by 7, so 3x7=21.

Step-by-step explanation:

[tex] \frac{3}{4} = \frac{w}{28}[/tex]

[tex] \frac{3}{4} = \frac{w}{4 \times 7} [/tex]

[tex]3 = \frac{w}{7} [/tex]

[tex]w = 21[/tex]