Home / 8,115.96-12,166.56-4,223.04

Finding the Fourth Proportional to 8,115.96, 12,166.56 and 4,223.04

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Solution

The fourth proportional to 8,115.96, 12,166.56 and 4,223.04 is: 6,330.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.96 : 12,166.56 = 4,223.04 : x
  2. Step 2: Convert to fraction form
    8,115.96/12,166.56 = 4,223.04/x
  3. Step 3: Cross multiply
    8,115.96x = 12,166.56 × 4,223.04
  4. Step 4: Simplify right side
    8,115.96x = 51,379,869.54
  5. Step 5: Solve for x
    x = 51,379,869.54/8,115.96
  6. Step 6: Final answer
    x = 6,330.72

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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.