Home / 2,781.26-4,172.75-1,481.75

Finding the Fourth Proportional to 2,781.26, 4,172.75 and 1,481.75

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Solution

The fourth proportional to 2,781.26, 4,172.75 and 1,481.75 is: 2,223.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.26 : 4,172.75 = 1,481.75 : x
  2. Step 2: Convert to fraction form
    2,781.26/4,172.75 = 1,481.75/x
  3. Step 3: Cross multiply
    2,781.26x = 4,172.75 × 1,481.75
  4. Step 4: Simplify right side
    2,781.26x = 6,182,964.90
  5. Step 5: Solve for x
    x = 6,182,964.90/2,781.26
  6. Step 6: Final answer
    x = 2,223.08

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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.