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Finding the Third Proportional to 5,399 and 8,171

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Solution

The third proportional to 5,399 and 8,171 is: 12,366.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399 : 8,171 = 8,171 : x
  2. Step 2: Convert to fraction form
    5,399/8,171 = 8,171/x
  3. Step 3: Cross multiply
    5,399x = 8,171 × 8,171
  4. Step 4: Simplify right side
    5,399x = 66,765,241
  5. Step 5: Solve for x
    x = 66,765,241/5,399
  6. Step 6: Final answer
    x = 12,366.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.