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Finding the Fourth Proportional to 8,589.56, 12,905.92 and 5,470.92

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Solution

The fourth proportional to 8,589.56, 12,905.92 and 5,470.92 is: 8,220.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.56 : 12,905.92 = 5,470.92 : x
  2. Step 2: Convert to fraction form
    8,589.56/12,905.92 = 5,470.92/x
  3. Step 3: Cross multiply
    8,589.56x = 12,905.92 × 5,470.92
  4. Step 4: Simplify right side
    8,589.56x = 70,607,255.85
  5. Step 5: Solve for x
    x = 70,607,255.85/8,589.56
  6. Step 6: Final answer
    x = 8,220.12

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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.