Home / 8,257.32-11,391.15-5,423.55

Finding the Fourth Proportional to 8,257.32, 11,391.15 and 5,423.55

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Solution

The fourth proportional to 8,257.32, 11,391.15 and 5,423.55 is: 7,481.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257.32 : 11,391.15 = 5,423.55 : x
  2. Step 2: Convert to fraction form
    8,257.32/11,391.15 = 5,423.55/x
  3. Step 3: Cross multiply
    8,257.32x = 11,391.15 × 5,423.55
  4. Step 4: Simplify right side
    8,257.32x = 61,780,471.58
  5. Step 5: Solve for x
    x = 61,780,471.58/8,257.32
  6. Step 6: Final answer
    x = 7,481.90

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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.