Home / 8,102.79-12,149.33-3,166.55

Finding the Fourth Proportional to 8,102.79, 12,149.33 and 3,166.55

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Solution

The fourth proportional to 8,102.79, 12,149.33 and 3,166.55 is: 4,747.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.79 : 12,149.33 = 3,166.55 : x
  2. Step 2: Convert to fraction form
    8,102.79/12,149.33 = 3,166.55/x
  3. Step 3: Cross multiply
    8,102.79x = 12,149.33 × 3,166.55
  4. Step 4: Simplify right side
    8,102.79x = 38,471,487.33
  5. Step 5: Solve for x
    x = 38,471,487.33/8,102.79
  6. Step 6: Final answer
    x = 4,747.93

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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.