Home / 2,489.12-3,436.82-1,605.44

Finding the Fourth Proportional to 2,489.12, 3,436.82 and 1,605.44

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Solution

The fourth proportional to 2,489.12, 3,436.82 and 1,605.44 is: 2,216.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.12 : 3,436.82 = 1,605.44 : x
  2. Step 2: Convert to fraction form
    2,489.12/3,436.82 = 1,605.44/x
  3. Step 3: Cross multiply
    2,489.12x = 3,436.82 × 1,605.44
  4. Step 4: Simplify right side
    2,489.12x = 5,517,608.30
  5. Step 5: Solve for x
    x = 5,517,608.30/2,489.12
  6. Step 6: Final answer
    x = 2,216.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.