Home / 8,082.68-12,121.64-3,151.14

Finding the Fourth Proportional to 8,082.68, 12,121.64 and 3,151.14

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Solution

The fourth proportional to 8,082.68, 12,121.64 and 3,151.14 is: 4,725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,082.68 : 12,121.64 = 3,151.14 : x
  2. Step 2: Convert to fraction form
    8,082.68/12,121.64 = 3,151.14/x
  3. Step 3: Cross multiply
    8,082.68x = 12,121.64 × 3,151.14
  4. Step 4: Simplify right side
    8,082.68x = 38,196,984.67
  5. Step 5: Solve for x
    x = 38,196,984.67/8,082.68
  6. Step 6: Final answer
    x = 4,725.78

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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.