Home / 2,854.12-4,278.21-1,391.44

Finding the Fourth Proportional to 2,854.12, 4,278.21 and 1,391.44

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Solution

The fourth proportional to 2,854.12, 4,278.21 and 1,391.44 is: 2,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.12 : 4,278.21 = 1,391.44 : x
  2. Step 2: Convert to fraction form
    2,854.12/4,278.21 = 1,391.44/x
  3. Step 3: Cross multiply
    2,854.12x = 4,278.21 × 1,391.44
  4. Step 4: Simplify right side
    2,854.12x = 5,952,872.52
  5. Step 5: Solve for x
    x = 5,952,872.52/2,854.12
  6. Step 6: Final answer
    x = 2,085.71

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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.