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Finding the Fourth Proportional to 3,969.16, 5,954.46 and 1,372.84

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Solution

The fourth proportional to 3,969.16, 5,954.46 and 1,372.84 is: 2,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.16 : 5,954.46 = 1,372.84 : x
  2. Step 2: Convert to fraction form
    3,969.16/5,954.46 = 1,372.84/x
  3. Step 3: Cross multiply
    3,969.16x = 5,954.46 × 1,372.84
  4. Step 4: Simplify right side
    3,969.16x = 8,174,520.87
  5. Step 5: Solve for x
    x = 8,174,520.87/3,969.16
  6. Step 6: Final answer
    x = 2,059.51

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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.