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Finding the Fourth Proportional to 8,589.62, 11,855.90 and 5,605.58

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Solution

The fourth proportional to 8,589.62, 11,855.90 and 5,605.58 is: 7,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.62 : 11,855.90 = 5,605.58 : x
  2. Step 2: Convert to fraction form
    8,589.62/11,855.90 = 5,605.58/x
  3. Step 3: Cross multiply
    8,589.62x = 11,855.90 × 5,605.58
  4. Step 4: Simplify right side
    8,589.62x = 66,459,195.92
  5. Step 5: Solve for x
    x = 66,459,195.92/8,589.62
  6. Step 6: Final answer
    x = 7,737.15

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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.