Home / 8,121.35-12,183.92-3,441.76

Finding the Fourth Proportional to 8,121.35, 12,183.92 and 3,441.76

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Solution

The fourth proportional to 8,121.35, 12,183.92 and 3,441.76 is: 5,163.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.35 : 12,183.92 = 3,441.76 : x
  2. Step 2: Convert to fraction form
    8,121.35/12,183.92 = 3,441.76/x
  3. Step 3: Cross multiply
    8,121.35x = 12,183.92 × 3,441.76
  4. Step 4: Simplify right side
    8,121.35x = 41,934,128.50
  5. Step 5: Solve for x
    x = 41,934,128.50/8,121.35
  6. Step 6: Final answer
    x = 5,163.44

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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.