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Finding the Third Proportional to 8,115 and 10,371

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Solution

The third proportional to 8,115 and 10,371 is: 13,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115 : 10,371 = 10,371 : x
  2. Step 2: Convert to fraction form
    8,115/10,371 = 10,371/x
  3. Step 3: Cross multiply
    8,115x = 10,371 × 10,371
  4. Step 4: Simplify right side
    8,115x = 107,557,641
  5. Step 5: Solve for x
    x = 107,557,641/8,115
  6. Step 6: Final answer
    x = 13,254.18

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.