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Finding the Fourth Proportional to 2,480.85, 3,721.41 and 1,244.79

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Solution

The fourth proportional to 2,480.85, 3,721.41 and 1,244.79 is: 1,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.85 : 3,721.41 = 1,244.79 : x
  2. Step 2: Convert to fraction form
    2,480.85/3,721.41 = 1,244.79/x
  3. Step 3: Cross multiply
    2,480.85x = 3,721.41 × 1,244.79
  4. Step 4: Simplify right side
    2,480.85x = 4,632,373.95
  5. Step 5: Solve for x
    x = 4,632,373.95/2,480.85
  6. Step 6: Final answer
    x = 1,867.25

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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.