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Finding the Fourth Proportional to 3,894.43, 5,372.54 and 2,321.95

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Solution

The fourth proportional to 3,894.43, 5,372.54 and 2,321.95 is: 3,203.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.43 : 5,372.54 = 2,321.95 : x
  2. Step 2: Convert to fraction form
    3,894.43/5,372.54 = 2,321.95/x
  3. Step 3: Cross multiply
    3,894.43x = 5,372.54 × 2,321.95
  4. Step 4: Simplify right side
    3,894.43x = 12,474,769.25
  5. Step 5: Solve for x
    x = 12,474,769.25/3,894.43
  6. Step 6: Final answer
    x = 3,203.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.