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Finding the Third Proportional to 3,230 and 8,489

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Solution

The third proportional to 3,230 and 8,489 is: 22,310.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,230 : 8,489 = 8,489 : x
  2. Step 2: Convert to fraction form
    3,230/8,489 = 8,489/x
  3. Step 3: Cross multiply
    3,230x = 8,489 × 8,489
  4. Step 4: Simplify right side
    3,230x = 72,063,121
  5. Step 5: Solve for x
    x = 72,063,121/3,230
  6. Step 6: Final answer
    x = 22,310.56

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Why These Related Problems?

These problems maintain the same ratio (2.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.