Home / 6,891.38-10,338.62-2,211.81

Finding the Fourth Proportional to 6,891.38, 10,338.62 and 2,211.81

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Solution

The fourth proportional to 6,891.38, 10,338.62 and 2,211.81 is: 3,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.38 : 10,338.62 = 2,211.81 : x
  2. Step 2: Convert to fraction form
    6,891.38/10,338.62 = 2,211.81/x
  3. Step 3: Cross multiply
    6,891.38x = 10,338.62 × 2,211.81
  4. Step 4: Simplify right side
    6,891.38x = 22,867,063.10
  5. Step 5: Solve for x
    x = 22,867,063.10/6,891.38
  6. Step 6: Final answer
    x = 3,318.21

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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.