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Finding the Third Proportional to 3,132.50 and 4,379

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Solution

The third proportional to 3,132.50 and 4,379 is: 6,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.50 : 4,379 = 4,379 : x
  2. Step 2: Convert to fraction form
    3,132.50/4,379 = 4,379/x
  3. Step 3: Cross multiply
    3,132.50x = 4,379 × 4,379
  4. Step 4: Simplify right side
    3,132.50x = 19,175,641
  5. Step 5: Solve for x
    x = 19,175,641/3,132.50
  6. Step 6: Final answer
    x = 6,121.51

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.