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Finding the Third Proportional to 5,387.50 and 8,223

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Solution

The third proportional to 5,387.50 and 8,223 is: 12,550.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.50 : 8,223 = 8,223 : x
  2. Step 2: Convert to fraction form
    5,387.50/8,223 = 8,223/x
  3. Step 3: Cross multiply
    5,387.50x = 8,223 × 8,223
  4. Step 4: Simplify right side
    5,387.50x = 67,617,729
  5. Step 5: Solve for x
    x = 67,617,729/5,387.50
  6. Step 6: Final answer
    x = 12,550.85

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.