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Finding the Fourth Proportional to 3,671.62, 5,507.43 and 1,361.86

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Solution

The fourth proportional to 3,671.62, 5,507.43 and 1,361.86 is: 2,042.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.62 : 5,507.43 = 1,361.86 : x
  2. Step 2: Convert to fraction form
    3,671.62/5,507.43 = 1,361.86/x
  3. Step 3: Cross multiply
    3,671.62x = 5,507.43 × 1,361.86
  4. Step 4: Simplify right side
    3,671.62x = 7,500,348.62
  5. Step 5: Solve for x
    x = 7,500,348.62/3,671.62
  6. Step 6: Final answer
    x = 2,042.79

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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.