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Finding the Third Proportional to 7,488 and 11,380

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Solution

The third proportional to 7,488 and 11,380 is: 17,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,488 : 11,380 = 11,380 : x
  2. Step 2: Convert to fraction form
    7,488/11,380 = 11,380/x
  3. Step 3: Cross multiply
    7,488x = 11,380 × 11,380
  4. Step 4: Simplify right side
    7,488x = 129,504,400
  5. Step 5: Solve for x
    x = 129,504,400/7,488
  6. Step 6: Final answer
    x = 17,294.93

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.