Home / 8,082.36-12,121.11-5,308.92

Finding the Fourth Proportional to 8,082.36, 12,121.11 and 5,308.92

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Solution

The fourth proportional to 8,082.36, 12,121.11 and 5,308.92 is: 7,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,082.36 : 12,121.11 = 5,308.92 : x
  2. Step 2: Convert to fraction form
    8,082.36/12,121.11 = 5,308.92/x
  3. Step 3: Cross multiply
    8,082.36x = 12,121.11 × 5,308.92
  4. Step 4: Simplify right side
    8,082.36x = 64,350,003.30
  5. Step 5: Solve for x
    x = 64,350,003.30/8,082.36
  6. Step 6: Final answer
    x = 7,961.78

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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.