Home / 8,149.82-12,219.66-3,761.64

Finding the Fourth Proportional to 8,149.82, 12,219.66 and 3,761.64

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Solution

The fourth proportional to 8,149.82, 12,219.66 and 3,761.64 is: 5,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.82 : 12,219.66 = 3,761.64 : x
  2. Step 2: Convert to fraction form
    8,149.82/12,219.66 = 3,761.64/x
  3. Step 3: Cross multiply
    8,149.82x = 12,219.66 × 3,761.64
  4. Step 4: Simplify right side
    8,149.82x = 45,965,961.84
  5. Step 5: Solve for x
    x = 45,965,961.84/8,149.82
  6. Step 6: Final answer
    x = 5,640.12

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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.