Home / 3,281.38-4,919.64-1,982.55

Finding the Fourth Proportional to 3,281.38, 4,919.64 and 1,982.55

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Solution

The fourth proportional to 3,281.38, 4,919.64 and 1,982.55 is: 2,972.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.38 : 4,919.64 = 1,982.55 : x
  2. Step 2: Convert to fraction form
    3,281.38/4,919.64 = 1,982.55/x
  3. Step 3: Cross multiply
    3,281.38x = 4,919.64 × 1,982.55
  4. Step 4: Simplify right side
    3,281.38x = 9,753,432.28
  5. Step 5: Solve for x
    x = 9,753,432.28/3,281.38
  6. Step 6: Final answer
    x = 2,972.36

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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.