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Finding the Third Proportional to 5,129 and 13,979

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Solution

The third proportional to 5,129 and 13,979 is: 38,099.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129 : 13,979 = 13,979 : x
  2. Step 2: Convert to fraction form
    5,129/13,979 = 13,979/x
  3. Step 3: Cross multiply
    5,129x = 13,979 × 13,979
  4. Step 4: Simplify right side
    5,129x = 195,412,441
  5. Step 5: Solve for x
    x = 195,412,441/5,129
  6. Step 6: Final answer
    x = 38,099.52

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Why These Related Problems?

These problems maintain the same ratio (2.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.