Home / 3,211.28-4,433.65-2,874.59

Finding the Fourth Proportional to 3,211.28, 4,433.65 and 2,874.59

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Solution

The fourth proportional to 3,211.28, 4,433.65 and 2,874.59 is: 3,968.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.28 : 4,433.65 = 2,874.59 : x
  2. Step 2: Convert to fraction form
    3,211.28/4,433.65 = 2,874.59/x
  3. Step 3: Cross multiply
    3,211.28x = 4,433.65 × 2,874.59
  4. Step 4: Simplify right side
    3,211.28x = 12,744,929.85
  5. Step 5: Solve for x
    x = 12,744,929.85/3,211.28
  6. Step 6: Final answer
    x = 3,968.81

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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.