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Finding the Third Proportional to 7,500 and 9,792

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Solution

The third proportional to 7,500 and 9,792 is: 12,784.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,500 : 9,792 = 9,792 : x
  2. Step 2: Convert to fraction form
    7,500/9,792 = 9,792/x
  3. Step 3: Cross multiply
    7,500x = 9,792 × 9,792
  4. Step 4: Simplify right side
    7,500x = 95,883,264
  5. Step 5: Solve for x
    x = 95,883,264/7,500
  6. Step 6: Final answer
    x = 12,784.44

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.