Finding the Third Proportional to 7,431.75 and 12,240.75
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Solution
The third proportional to 7,431.75 and 12,240.75 is: 20,161.60
Step by Step Solution
- Step 1: Write the proportion equation
7,431.75 : 12,240.75 = 12,240.75 : x - Step 2: Convert to fraction form
7,431.75/12,240.75 = 12,240.75/x - Step 3: Cross multiply
7,431.75x = 12,240.75 × 12,240.75 - Step 4: Simplify right side
7,431.75x = 149,835,960.56 - Step 5: Solve for x
x = 149,835,960.56/7,431.75 - Step 6: Final answer
x = 20,161.60
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Why These Related Problems?
These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.