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Finding the Fourth Proportional to 7,792.20, 11,672.10 and 7,792.20

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Solution

The fourth proportional to 7,792.20, 11,672.10 and 7,792.20 is: 11,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,792.20 : 11,672.10 = 7,792.20 : x
  2. Step 2: Convert to fraction form
    7,792.20/11,672.10 = 7,792.20/x
  3. Step 3: Cross multiply
    7,792.20x = 11,672.10 × 7,792.20
  4. Step 4: Simplify right side
    7,792.20x = 90,951,337.62
  5. Step 5: Solve for x
    x = 90,951,337.62/7,792.20
  6. Step 6: Final answer
    x = 11,672.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.