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Finding the Third Proportional to 3,969 and 7,371

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Solution

The third proportional to 3,969 and 7,371 is: 13,689

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969 : 7,371 = 7,371 : x
  2. Step 2: Convert to fraction form
    3,969/7,371 = 7,371/x
  3. Step 3: Cross multiply
    3,969x = 7,371 × 7,371
  4. Step 4: Simplify right side
    3,969x = 54,331,641
  5. Step 5: Solve for x
    x = 54,331,641/3,969
  6. Step 6: Final answer
    x = 13,689

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.