Home / 3,179.78-4,387.92-1,763.42

Finding the Fourth Proportional to 3,179.78, 4,387.92 and 1,763.42

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Solution

The fourth proportional to 3,179.78, 4,387.92 and 1,763.42 is: 2,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.78 : 4,387.92 = 1,763.42 : x
  2. Step 2: Convert to fraction form
    3,179.78/4,387.92 = 1,763.42/x
  3. Step 3: Cross multiply
    3,179.78x = 4,387.92 × 1,763.42
  4. Step 4: Simplify right side
    3,179.78x = 7,737,745.89
  5. Step 5: Solve for x
    x = 7,737,745.89/3,179.78
  6. Step 6: Final answer
    x = 2,433.42

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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.