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Finding the Third Proportional to 3,557 and 7,387

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Solution

The third proportional to 3,557 and 7,387 is: 15,340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557 : 7,387 = 7,387 : x
  2. Step 2: Convert to fraction form
    3,557/7,387 = 7,387/x
  3. Step 3: Cross multiply
    3,557x = 7,387 × 7,387
  4. Step 4: Simplify right side
    3,557x = 54,567,769
  5. Step 5: Solve for x
    x = 54,567,769/3,557
  6. Step 6: Final answer
    x = 15,340.95

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.