Home / 2,218.66-3,326.82-985.54

Finding the Fourth Proportional to 2,218.66, 3,326.82 and 985.54

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Solution

The fourth proportional to 2,218.66, 3,326.82 and 985.54 is: 1,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.66 : 3,326.82 = 985.54 : x
  2. Step 2: Convert to fraction form
    2,218.66/3,326.82 = 985.54/x
  3. Step 3: Cross multiply
    2,218.66x = 3,326.82 × 985.54
  4. Step 4: Simplify right side
    2,218.66x = 3,278,714.18
  5. Step 5: Solve for x
    x = 3,278,714.18/2,218.66
  6. Step 6: Final answer
    x = 1,477.79

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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.