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Finding the Third Proportional to 7,406 and 11,381

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Solution

The third proportional to 7,406 and 11,381 is: 17,489.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,406 : 11,381 = 11,381 : x
  2. Step 2: Convert to fraction form
    7,406/11,381 = 11,381/x
  3. Step 3: Cross multiply
    7,406x = 11,381 × 11,381
  4. Step 4: Simplify right side
    7,406x = 129,527,161
  5. Step 5: Solve for x
    x = 129,527,161/7,406
  6. Step 6: Final answer
    x = 17,489.49

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.