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Finding the Third Proportional to 8,129 and 11,370

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Solution

The third proportional to 8,129 and 11,370 is: 15,903.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129 : 11,370 = 11,370 : x
  2. Step 2: Convert to fraction form
    8,129/11,370 = 11,370/x
  3. Step 3: Cross multiply
    8,129x = 11,370 × 11,370
  4. Step 4: Simplify right side
    8,129x = 129,276,900
  5. Step 5: Solve for x
    x = 129,276,900/8,129
  6. Step 6: Final answer
    x = 15,903.17

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.