Home / 8,115.86-11,199.89-4,531.09

Finding the Fourth Proportional to 8,115.86, 11,199.89 and 4,531.09

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Solution

The fourth proportional to 8,115.86, 11,199.89 and 4,531.09 is: 6,252.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.86 : 11,199.89 = 4,531.09 : x
  2. Step 2: Convert to fraction form
    8,115.86/11,199.89 = 4,531.09/x
  3. Step 3: Cross multiply
    8,115.86x = 11,199.89 × 4,531.09
  4. Step 4: Simplify right side
    8,115.86x = 50,747,709.58
  5. Step 5: Solve for x
    x = 50,747,709.58/8,115.86
  6. Step 6: Final answer
    x = 6,252.91

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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.