Home / 2,679.44-4,015.92-1,380.20

Finding the Fourth Proportional to 2,679.44, 4,015.92 and 1,380.20

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Solution

The fourth proportional to 2,679.44, 4,015.92 and 1,380.20 is: 2,068.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.44 : 4,015.92 = 1,380.20 : x
  2. Step 2: Convert to fraction form
    2,679.44/4,015.92 = 1,380.20/x
  3. Step 3: Cross multiply
    2,679.44x = 4,015.92 × 1,380.20
  4. Step 4: Simplify right side
    2,679.44x = 5,542,772.78
  5. Step 5: Solve for x
    x = 5,542,772.78/2,679.44
  6. Step 6: Final answer
    x = 2,068.63

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1.5x scale

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.