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Finding the Third Proportional to 6,400 and 9,792

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Solution

The third proportional to 6,400 and 9,792 is: 14,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,400 : 9,792 = 9,792 : x
  2. Step 2: Convert to fraction form
    6,400/9,792 = 9,792/x
  3. Step 3: Cross multiply
    6,400x = 9,792 × 9,792
  4. Step 4: Simplify right side
    6,400x = 95,883,264
  5. Step 5: Solve for x
    x = 95,883,264/6,400
  6. Step 6: Final answer
    x = 14,981.76

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.