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Finding the Third Proportional to 8,371.50 and 11,479

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Solution

The third proportional to 8,371.50 and 11,479 is: 15,740.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.50 : 11,479 = 11,479 : x
  2. Step 2: Convert to fraction form
    8,371.50/11,479 = 11,479/x
  3. Step 3: Cross multiply
    8,371.50x = 11,479 × 11,479
  4. Step 4: Simplify right side
    8,371.50x = 131,767,441
  5. Step 5: Solve for x
    x = 131,767,441/8,371.50
  6. Step 6: Final answer
    x = 15,740.00

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.