Home / 8,286.41-12,429.20-3,091.88

Finding the Fourth Proportional to 8,286.41, 12,429.20 and 3,091.88

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Solution

The fourth proportional to 8,286.41, 12,429.20 and 3,091.88 is: 4,637.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.41 : 12,429.20 = 3,091.88 : x
  2. Step 2: Convert to fraction form
    8,286.41/12,429.20 = 3,091.88/x
  3. Step 3: Cross multiply
    8,286.41x = 12,429.20 × 3,091.88
  4. Step 4: Simplify right side
    8,286.41x = 38,429,540.48
  5. Step 5: Solve for x
    x = 38,429,540.48/8,286.41
  6. Step 6: Final answer
    x = 4,637.66

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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.