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Finding the Fourth Proportional to 8,125.86, 11,213.67 and 4,399.86

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Solution

The fourth proportional to 8,125.86, 11,213.67 and 4,399.86 is: 6,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.86 : 11,213.67 = 4,399.86 : x
  2. Step 2: Convert to fraction form
    8,125.86/11,213.67 = 4,399.86/x
  3. Step 3: Cross multiply
    8,125.86x = 11,213.67 × 4,399.86
  4. Step 4: Simplify right side
    8,125.86x = 49,338,578.09
  5. Step 5: Solve for x
    x = 49,338,578.09/8,125.86
  6. Step 6: Final answer
    x = 6,071.80

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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.