Home / 8,155.78-12,231.60-3,473.20

Finding the Fourth Proportional to 8,155.78, 12,231.60 and 3,473.20

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Solution

The fourth proportional to 8,155.78, 12,231.60 and 3,473.20 is: 5,208.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.78 : 12,231.60 = 3,473.20 : x
  2. Step 2: Convert to fraction form
    8,155.78/12,231.60 = 3,473.20/x
  3. Step 3: Cross multiply
    8,155.78x = 12,231.60 × 3,473.20
  4. Step 4: Simplify right side
    8,155.78x = 42,482,793.12
  5. Step 5: Solve for x
    x = 42,482,793.12/8,155.78
  6. Step 6: Final answer
    x = 5,208.92

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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.