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Finding the Fourth Proportional to 3,991.97, 5,512.41 and 2,502.45

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Solution

The fourth proportional to 3,991.97, 5,512.41 and 2,502.45 is: 3,455.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.97 : 5,512.41 = 2,502.45 : x
  2. Step 2: Convert to fraction form
    3,991.97/5,512.41 = 2,502.45/x
  3. Step 3: Cross multiply
    3,991.97x = 5,512.41 × 2,502.45
  4. Step 4: Simplify right side
    3,991.97x = 13,794,530.40
  5. Step 5: Solve for x
    x = 13,794,530.40/3,991.97
  6. Step 6: Final answer
    x = 3,455.57

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1.5x scale

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.