Home / 3,286.88-4,930.32-1,338.56

Finding the Fourth Proportional to 3,286.88, 4,930.32 and 1,338.56

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Solution

The fourth proportional to 3,286.88, 4,930.32 and 1,338.56 is: 2,007.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.88 : 4,930.32 = 1,338.56 : x
  2. Step 2: Convert to fraction form
    3,286.88/4,930.32 = 1,338.56/x
  3. Step 3: Cross multiply
    3,286.88x = 4,930.32 × 1,338.56
  4. Step 4: Simplify right side
    3,286.88x = 6,599,529.14
  5. Step 5: Solve for x
    x = 6,599,529.14/3,286.88
  6. Step 6: Final answer
    x = 2,007.84

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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.