Home / 8,115.83-12,171.70-3,182.78

Finding the Fourth Proportional to 8,115.83, 12,171.70 and 3,182.78

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Solution

The fourth proportional to 8,115.83, 12,171.70 and 3,182.78 is: 4,773.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.83 : 12,171.70 = 3,182.78 : x
  2. Step 2: Convert to fraction form
    8,115.83/12,171.70 = 3,182.78/x
  3. Step 3: Cross multiply
    8,115.83x = 12,171.70 × 3,182.78
  4. Step 4: Simplify right side
    8,115.83x = 38,739,843.33
  5. Step 5: Solve for x
    x = 38,739,843.33/8,115.83
  6. Step 6: Final answer
    x = 4,773.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.