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Finding the Third Proportional to 2,909.25 and 6,939

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Solution

The third proportional to 2,909.25 and 6,939 is: 16,550.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.25 : 6,939 = 6,939 : x
  2. Step 2: Convert to fraction form
    2,909.25/6,939 = 6,939/x
  3. Step 3: Cross multiply
    2,909.25x = 6,939 × 6,939
  4. Step 4: Simplify right side
    2,909.25x = 48,149,721
  5. Step 5: Solve for x
    x = 48,149,721/2,909.25
  6. Step 6: Final answer
    x = 16,550.56

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.