Home / 8,105.32-11,179.38-6,115.96

Finding the Fourth Proportional to 8,105.32, 11,179.38 and 6,115.96

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Solution

The fourth proportional to 8,105.32, 11,179.38 and 6,115.96 is: 8,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.32 : 11,179.38 = 6,115.96 : x
  2. Step 2: Convert to fraction form
    8,105.32/11,179.38 = 6,115.96/x
  3. Step 3: Cross multiply
    8,105.32x = 11,179.38 × 6,115.96
  4. Step 4: Simplify right side
    8,105.32x = 68,372,640.90
  5. Step 5: Solve for x
    x = 68,372,640.90/8,105.32
  6. Step 6: Final answer
    x = 8,435.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.