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Finding the Fourth Proportional to 3,599.55, 5,397.18 and 1,405.71

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Solution

The fourth proportional to 3,599.55, 5,397.18 and 1,405.71 is: 2,107.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,599.55 : 5,397.18 = 1,405.71 : x
  2. Step 2: Convert to fraction form
    3,599.55/5,397.18 = 1,405.71/x
  3. Step 3: Cross multiply
    3,599.55x = 5,397.18 × 1,405.71
  4. Step 4: Simplify right side
    3,599.55x = 7,586,869.90
  5. Step 5: Solve for x
    x = 7,586,869.90/3,599.55
  6. Step 6: Final answer
    x = 2,107.73

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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.