Home / 8,148.78-12,221.60-3,467.90

Finding the Fourth Proportional to 8,148.78, 12,221.60 and 3,467.90

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Solution

The fourth proportional to 8,148.78, 12,221.60 and 3,467.90 is: 5,201.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,148.78 : 12,221.60 = 3,467.90 : x
  2. Step 2: Convert to fraction form
    8,148.78/12,221.60 = 3,467.90/x
  3. Step 3: Cross multiply
    8,148.78x = 12,221.60 × 3,467.90
  4. Step 4: Simplify right side
    8,148.78x = 42,383,286.64
  5. Step 5: Solve for x
    x = 42,383,286.64/8,148.78
  6. Step 6: Final answer
    x = 5,201.18

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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.