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Finding the Fourth Proportional to 8,591.01, 12,783.61 and 8,561.85

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Solution

The fourth proportional to 8,591.01, 12,783.61 and 8,561.85 is: 12,740.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.01 : 12,783.61 = 8,561.85 : x
  2. Step 2: Convert to fraction form
    8,591.01/12,783.61 = 8,561.85/x
  3. Step 3: Cross multiply
    8,591.01x = 12,783.61 × 8,561.85
  4. Step 4: Simplify right side
    8,591.01x = 109,451,329.87
  5. Step 5: Solve for x
    x = 109,451,329.87/8,591.01
  6. Step 6: Final answer
    x = 12,740.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.