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Finding the Third Proportional to 7,861 and 18,550

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Solution

The third proportional to 7,861 and 18,550 is: 43,773.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861 : 18,550 = 18,550 : x
  2. Step 2: Convert to fraction form
    7,861/18,550 = 18,550/x
  3. Step 3: Cross multiply
    7,861x = 18,550 × 18,550
  4. Step 4: Simplify right side
    7,861x = 344,102,500
  5. Step 5: Solve for x
    x = 344,102,500/7,861
  6. Step 6: Final answer
    x = 43,773.37

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.