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Finding the Fourth Proportional to 2,550.97, 3,825.16 and 991.42

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Solution

The fourth proportional to 2,550.97, 3,825.16 and 991.42 is: 1,486.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,550.97 : 3,825.16 = 991.42 : x
  2. Step 2: Convert to fraction form
    2,550.97/3,825.16 = 991.42/x
  3. Step 3: Cross multiply
    2,550.97x = 3,825.16 × 991.42
  4. Step 4: Simplify right side
    2,550.97x = 3,792,340.13
  5. Step 5: Solve for x
    x = 3,792,340.13/2,550.97
  6. Step 6: Final answer
    x = 1,486.63

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1.5x scale

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.