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Finding the Fourth Proportional to 7,806.87, 11,713.14 and 3,425.58

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Solution

The fourth proportional to 7,806.87, 11,713.14 and 3,425.58 is: 5,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,806.87 : 11,713.14 = 3,425.58 : x
  2. Step 2: Convert to fraction form
    7,806.87/11,713.14 = 3,425.58/x
  3. Step 3: Cross multiply
    7,806.87x = 11,713.14 × 3,425.58
  4. Step 4: Simplify right side
    7,806.87x = 40,124,298.12
  5. Step 5: Solve for x
    x = 40,124,298.12/7,806.87
  6. Step 6: Final answer
    x = 5,139.61

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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.