Using proportions, considering the given ratio, Isabella gets [tex]\frac{4}{7}[/tex] of the total reward.
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
The ratio of Isabella and Aiden is 4:3, which means that out of 4 + 3 = 7 items, Isabella gets 4 and Aiden gets 3, hence the fraction is given by:
[tex]\frac{4}{7}[/tex].
More can be learned about proportions at https://brainly.com/question/24372153
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