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Finding the Fourth Proportional to 7,876.58, 10,863.11 and 5,891.87

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Solution

The fourth proportional to 7,876.58, 10,863.11 and 5,891.87 is: 8,125.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.58 : 10,863.11 = 5,891.87 : x
  2. Step 2: Convert to fraction form
    7,876.58/10,863.11 = 5,891.87/x
  3. Step 3: Cross multiply
    7,876.58x = 10,863.11 × 5,891.87
  4. Step 4: Simplify right side
    7,876.58x = 64,004,073.80
  5. Step 5: Solve for x
    x = 64,004,073.80/7,876.58
  6. Step 6: Final answer
    x = 8,125.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.