Enter the missing numbers in the boxes to complete the table of equivalent ratios of lengths to widths

Answer:
Since we are given that the ratio are equivalent of the length and width so we will complete our table as follows:
Length(cm) Width(cm)
- 4
3 -
5 10
7 -
Since we are given 3 blanks and only ratio could be depicted from the third entry.
[tex]\dfrac{Length}{width}=\dfrac{5}{10}=\dfrac{1}{2}[/tex]
Hence, all the ratio's must be [tex]\dfrac{1}{2}[/tex].
so from first entry we have:
[tex]\dfrac{L}{4}=\dfrac{1}{2}\\\\L=2cm[/tex]
Where L denotes the length.
for second entry:
[tex]\dfrac{3}{W}=\dfrac{1}{2}\\\\W=6cm[/tex]
where W denotes the width.
for last entry:
[tex]\dfrac{7}{W}=\dfrac{1}{2}\\\\W=14cm[/tex]
Hence the table could be completed as:
Length(cm) Width(cm)
2 4
3 6
5 10
7 14