Home / 8,121.06-12,179.50-3,190.73

Finding the Fourth Proportional to 8,121.06, 12,179.50 and 3,190.73

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Solution

The fourth proportional to 8,121.06, 12,179.50 and 3,190.73 is: 4,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.06 : 12,179.50 = 3,190.73 : x
  2. Step 2: Convert to fraction form
    8,121.06/12,179.50 = 3,190.73/x
  3. Step 3: Cross multiply
    8,121.06x = 12,179.50 × 3,190.73
  4. Step 4: Simplify right side
    8,121.06x = 38,861,427.16
  5. Step 5: Solve for x
    x = 38,861,427.16/8,121.06
  6. Step 6: Final answer
    x = 4,785.27

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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.