Home / 2,218.39-3,324.85-1,338.12

Finding the Fourth Proportional to 2,218.39, 3,324.85 and 1,338.12

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Solution

The fourth proportional to 2,218.39, 3,324.85 and 1,338.12 is: 2,005.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.39 : 3,324.85 = 1,338.12 : x
  2. Step 2: Convert to fraction form
    2,218.39/3,324.85 = 1,338.12/x
  3. Step 3: Cross multiply
    2,218.39x = 3,324.85 × 1,338.12
  4. Step 4: Simplify right side
    2,218.39x = 4,449,044.94
  5. Step 5: Solve for x
    x = 4,449,044.94/2,218.39
  6. Step 6: Final answer
    x = 2,005.53

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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.