Home / 8,105.57-11,185.68-4,379.57

Finding the Fourth Proportional to 8,105.57, 11,185.68 and 4,379.57

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Solution

The fourth proportional to 8,105.57, 11,185.68 and 4,379.57 is: 6,043.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.57 : 11,185.68 = 4,379.57 : x
  2. Step 2: Convert to fraction form
    8,105.57/11,185.68 = 4,379.57/x
  3. Step 3: Cross multiply
    8,105.57x = 11,185.68 × 4,379.57
  4. Step 4: Simplify right side
    8,105.57x = 48,988,468.56
  5. Step 5: Solve for x
    x = 48,988,468.56/8,105.57
  6. Step 6: Final answer
    x = 6,043.80

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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.