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Finding the Fourth Proportional to 3,806.04, 5,711.62 and 1,340.85

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Solution

The fourth proportional to 3,806.04, 5,711.62 and 1,340.85 is: 2,012.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.04 : 5,711.62 = 1,340.85 : x
  2. Step 2: Convert to fraction form
    3,806.04/5,711.62 = 1,340.85/x
  3. Step 3: Cross multiply
    3,806.04x = 5,711.62 × 1,340.85
  4. Step 4: Simplify right side
    3,806.04x = 7,658,425.68
  5. Step 5: Solve for x
    x = 7,658,425.68/3,806.04
  6. Step 6: Final answer
    x = 2,012.18

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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.