Home / 8,121.12-12,179.55-3,677.05

Finding the Fourth Proportional to 8,121.12, 12,179.55 and 3,677.05

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Solution

The fourth proportional to 8,121.12, 12,179.55 and 3,677.05 is: 5,514.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.12 : 12,179.55 = 3,677.05 : x
  2. Step 2: Convert to fraction form
    8,121.12/12,179.55 = 3,677.05/x
  3. Step 3: Cross multiply
    8,121.12x = 12,179.55 × 3,677.05
  4. Step 4: Simplify right side
    8,121.12x = 44,784,814.33
  5. Step 5: Solve for x
    x = 44,784,814.33/8,121.12
  6. Step 6: Final answer
    x = 5,514.61

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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.