Home / 8,115.27-11,174.10-6,917.57

Finding the Fourth Proportional to 8,115.27, 11,174.10 and 6,917.57

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Solution

The fourth proportional to 8,115.27, 11,174.10 and 6,917.57 is: 9,524.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.27 : 11,174.10 = 6,917.57 : x
  2. Step 2: Convert to fraction form
    8,115.27/11,174.10 = 6,917.57/x
  3. Step 3: Cross multiply
    8,115.27x = 11,174.10 × 6,917.57
  4. Step 4: Simplify right side
    8,115.27x = 77,297,629.58
  5. Step 5: Solve for x
    x = 77,297,629.58/8,115.27
  6. Step 6: Final answer
    x = 9,524.96

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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.