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Finding the Fourth Proportional to 3,940.55, 5,440.49 and 2,450.49

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Solution

The fourth proportional to 3,940.55, 5,440.49 and 2,450.49 is: 3,383.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.55 : 5,440.49 = 2,450.49 : x
  2. Step 2: Convert to fraction form
    3,940.55/5,440.49 = 2,450.49/x
  3. Step 3: Cross multiply
    3,940.55x = 5,440.49 × 2,450.49
  4. Step 4: Simplify right side
    3,940.55x = 13,331,854.09
  5. Step 5: Solve for x
    x = 13,331,854.09/3,940.55
  6. Step 6: Final answer
    x = 3,383.25

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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.