Home / 8,104.50-12,139.20-3,935.79

Finding the Fourth Proportional to 8,104.50, 12,139.20 and 3,935.79

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Solution

The fourth proportional to 8,104.50, 12,139.20 and 3,935.79 is: 5,895.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,104.50 : 12,139.20 = 3,935.79 : x
  2. Step 2: Convert to fraction form
    8,104.50/12,139.20 = 3,935.79/x
  3. Step 3: Cross multiply
    8,104.50x = 12,139.20 × 3,935.79
  4. Step 4: Simplify right side
    8,104.50x = 47,777,341.97
  5. Step 5: Solve for x
    x = 47,777,341.97/8,104.50
  6. Step 6: Final answer
    x = 5,895.16

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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.