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Finding the Third Proportional to 3,977 and 9,389

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Solution

The third proportional to 3,977 and 9,389 is: 22,165.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977 : 9,389 = 9,389 : x
  2. Step 2: Convert to fraction form
    3,977/9,389 = 9,389/x
  3. Step 3: Cross multiply
    3,977x = 9,389 × 9,389
  4. Step 4: Simplify right side
    3,977x = 88,153,321
  5. Step 5: Solve for x
    x = 88,153,321/3,977
  6. Step 6: Final answer
    x = 22,165.78

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.