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Finding the Third Proportional to 8,140 and 11,314

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Solution

The third proportional to 8,140 and 11,314 is: 15,725.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140 : 11,314 = 11,314 : x
  2. Step 2: Convert to fraction form
    8,140/11,314 = 11,314/x
  3. Step 3: Cross multiply
    8,140x = 11,314 × 11,314
  4. Step 4: Simplify right side
    8,140x = 128,006,596
  5. Step 5: Solve for x
    x = 128,006,596/8,140
  6. Step 6: Final answer
    x = 15,725.63

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.