Home / 2,023.15-2,791.79-1,138.78

Finding the Fourth Proportional to 2,023.15, 2,791.79 and 1,138.78

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Solution

The fourth proportional to 2,023.15, 2,791.79 and 1,138.78 is: 1,571.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,023.15 : 2,791.79 = 1,138.78 : x
  2. Step 2: Convert to fraction form
    2,023.15/2,791.79 = 1,138.78/x
  3. Step 3: Cross multiply
    2,023.15x = 2,791.79 × 1,138.78
  4. Step 4: Simplify right side
    2,023.15x = 3,179,234.62
  5. Step 5: Solve for x
    x = 3,179,234.62/2,023.15
  6. Step 6: Final answer
    x = 1,571.43

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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.