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Finding the Third Proportional to 3,915 and 8,089

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Solution

The third proportional to 3,915 and 8,089 is: 16,713.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915 : 8,089 = 8,089 : x
  2. Step 2: Convert to fraction form
    3,915/8,089 = 8,089/x
  3. Step 3: Cross multiply
    3,915x = 8,089 × 8,089
  4. Step 4: Simplify right side
    3,915x = 65,431,921
  5. Step 5: Solve for x
    x = 65,431,921/3,915
  6. Step 6: Final answer
    x = 16,713.13

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.