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Finding the Fourth Proportional to 8,391.32, 12,591.22 and 5,941.88

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Solution

The fourth proportional to 8,391.32, 12,591.22 and 5,941.88 is: 8,915.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.32 : 12,591.22 = 5,941.88 : x
  2. Step 2: Convert to fraction form
    8,391.32/12,591.22 = 5,941.88/x
  3. Step 3: Cross multiply
    8,391.32x = 12,591.22 × 5,941.88
  4. Step 4: Simplify right side
    8,391.32x = 74,815,518.29
  5. Step 5: Solve for x
    x = 74,815,518.29/8,391.32
  6. Step 6: Final answer
    x = 8,915.82

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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.