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Finding the Third Proportional to 7,344 and 17,780

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Solution

The third proportional to 7,344 and 17,780 is: 43,045.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,344 : 17,780 = 17,780 : x
  2. Step 2: Convert to fraction form
    7,344/17,780 = 17,780/x
  3. Step 3: Cross multiply
    7,344x = 17,780 × 17,780
  4. Step 4: Simplify right side
    7,344x = 316,128,400
  5. Step 5: Solve for x
    x = 316,128,400/7,344
  6. Step 6: Final answer
    x = 43,045.81

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.