Home / 3,162.11-4,734.92-2,120.45

Finding the Fourth Proportional to 3,162.11, 4,734.92 and 2,120.45

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Solution

The fourth proportional to 3,162.11, 4,734.92 and 2,120.45 is: 3,175.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.11 : 4,734.92 = 2,120.45 : x
  2. Step 2: Convert to fraction form
    3,162.11/4,734.92 = 2,120.45/x
  3. Step 3: Cross multiply
    3,162.11x = 4,734.92 × 2,120.45
  4. Step 4: Simplify right side
    3,162.11x = 10,040,142.74
  5. Step 5: Solve for x
    x = 10,040,142.74/3,162.11
  6. Step 6: Final answer
    x = 3,175.15

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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.