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Finding the Fourth Proportional to 3,969.75, 5,473.28 and 2,550.95

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Solution

The fourth proportional to 3,969.75, 5,473.28 and 2,550.95 is: 3,517.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.75 : 5,473.28 = 2,550.95 : x
  2. Step 2: Convert to fraction form
    3,969.75/5,473.28 = 2,550.95/x
  3. Step 3: Cross multiply
    3,969.75x = 5,473.28 × 2,550.95
  4. Step 4: Simplify right side
    3,969.75x = 13,962,042.63
  5. Step 5: Solve for x
    x = 13,962,042.63/3,969.75
  6. Step 6: Final answer
    x = 3,517.11

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