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Finding the Fourth Proportional to 3,759.46, 5,639.16 and 2,938.42

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Solution

The fourth proportional to 3,759.46, 5,639.16 and 2,938.42 is: 4,407.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.46 : 5,639.16 = 2,938.42 : x
  2. Step 2: Convert to fraction form
    3,759.46/5,639.16 = 2,938.42/x
  3. Step 3: Cross multiply
    3,759.46x = 5,639.16 × 2,938.42
  4. Step 4: Simplify right side
    3,759.46x = 16,570,236.61
  5. Step 5: Solve for x
    x = 16,570,236.61/3,759.46
  6. Step 6: Final answer
    x = 4,407.61

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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.