Home / 3,211.12-4,805.72-2,691.71

Finding the Fourth Proportional to 3,211.12, 4,805.72 and 2,691.71

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Solution

The fourth proportional to 3,211.12, 4,805.72 and 2,691.71 is: 4,028.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.12 : 4,805.72 = 2,691.71 : x
  2. Step 2: Convert to fraction form
    3,211.12/4,805.72 = 2,691.71/x
  3. Step 3: Cross multiply
    3,211.12x = 4,805.72 × 2,691.71
  4. Step 4: Simplify right side
    3,211.12x = 12,935,604.58
  5. Step 5: Solve for x
    x = 12,935,604.58/3,211.12
  6. Step 6: Final answer
    x = 4,028.38

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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.