Home / 2,517.36-3,778.20-1,219.80

Finding the Fourth Proportional to 2,517.36, 3,778.20 and 1,219.80

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Solution

The fourth proportional to 2,517.36, 3,778.20 and 1,219.80 is: 1,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.36 : 3,778.20 = 1,219.80 : x
  2. Step 2: Convert to fraction form
    2,517.36/3,778.20 = 1,219.80/x
  3. Step 3: Cross multiply
    2,517.36x = 3,778.20 × 1,219.80
  4. Step 4: Simplify right side
    2,517.36x = 4,608,648.36
  5. Step 5: Solve for x
    x = 4,608,648.36/2,517.36
  6. Step 6: Final answer
    x = 1,830.75

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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.