Home / 8,120.55-12,179.73-3,442.41

Finding the Fourth Proportional to 8,120.55, 12,179.73 and 3,442.41

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Solution

The fourth proportional to 8,120.55, 12,179.73 and 3,442.41 is: 5,163.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.55 : 12,179.73 = 3,442.41 : x
  2. Step 2: Convert to fraction form
    8,120.55/12,179.73 = 3,442.41/x
  3. Step 3: Cross multiply
    8,120.55x = 12,179.73 × 3,442.41
  4. Step 4: Simplify right side
    8,120.55x = 41,927,624.35
  5. Step 5: Solve for x
    x = 41,927,624.35/8,120.55
  6. Step 6: Final answer
    x = 5,163.15

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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.