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Finding the Third Proportional to 3,390.50 and 5,251.88

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Solution

The third proportional to 3,390.50 and 5,251.88 is: 8,135.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.50 : 5,251.88 = 5,251.88 : x
  2. Step 2: Convert to fraction form
    3,390.50/5,251.88 = 5,251.88/x
  3. Step 3: Cross multiply
    3,390.50x = 5,251.88 × 5,251.88
  4. Step 4: Simplify right side
    3,390.50x = 27,582,191.02
  5. Step 5: Solve for x
    x = 27,582,191.02/3,390.50
  6. Step 6: Final answer
    x = 8,135.14

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.