Home / 8,081.11-12,121.28-2,817.30

Finding the Fourth Proportional to 8,081.11, 12,121.28 and 2,817.30

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Solution

The fourth proportional to 8,081.11, 12,121.28 and 2,817.30 is: 4,225.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.11 : 12,121.28 = 2,817.30 : x
  2. Step 2: Convert to fraction form
    8,081.11/12,121.28 = 2,817.30/x
  3. Step 3: Cross multiply
    8,081.11x = 12,121.28 × 2,817.30
  4. Step 4: Simplify right side
    8,081.11x = 34,149,282.14
  5. Step 5: Solve for x
    x = 34,149,282.14/8,081.11
  6. Step 6: Final answer
    x = 4,225.82

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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.