Home / 4,920.78-6,791.40-3,241.92

Finding the Fourth Proportional to 4,920.78, 6,791.40 and 3,241.92

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Solution

The fourth proportional to 4,920.78, 6,791.40 and 3,241.92 is: 4,474.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.78 : 6,791.40 = 3,241.92 : x
  2. Step 2: Convert to fraction form
    4,920.78/6,791.40 = 3,241.92/x
  3. Step 3: Cross multiply
    4,920.78x = 6,791.40 × 3,241.92
  4. Step 4: Simplify right side
    4,920.78x = 22,017,175.49
  5. Step 5: Solve for x
    x = 22,017,175.49/4,920.78
  6. Step 6: Final answer
    x = 4,474.33

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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.