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Finding the Fourth Proportional to 3,969.92, 5,954.96 and 1,336.94

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Solution

The fourth proportional to 3,969.92, 5,954.96 and 1,336.94 is: 2,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.92 : 5,954.96 = 1,336.94 : x
  2. Step 2: Convert to fraction form
    3,969.92/5,954.96 = 1,336.94/x
  3. Step 3: Cross multiply
    3,969.92x = 5,954.96 × 1,336.94
  4. Step 4: Simplify right side
    3,969.92x = 7,961,420.12
  5. Step 5: Solve for x
    x = 7,961,420.12/3,969.92
  6. Step 6: Final answer
    x = 2,005.43

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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.