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Finding the Fourth Proportional to 7,876.62, 11,799.90 and 7,612.92

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Solution

The fourth proportional to 7,876.62, 11,799.90 and 7,612.92 is: 11,404.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.62 : 11,799.90 = 7,612.92 : x
  2. Step 2: Convert to fraction form
    7,876.62/11,799.90 = 7,612.92/x
  3. Step 3: Cross multiply
    7,876.62x = 11,799.90 × 7,612.92
  4. Step 4: Simplify right side
    7,876.62x = 89,831,694.71
  5. Step 5: Solve for x
    x = 89,831,694.71/7,876.62
  6. Step 6: Final answer
    x = 11,404.85

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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.