Home / 2,489.29-3,434.39-1,440.61

Finding the Fourth Proportional to 2,489.29, 3,434.39 and 1,440.61

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Solution

The fourth proportional to 2,489.29, 3,434.39 and 1,440.61 is: 1,987.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.29 : 3,434.39 = 1,440.61 : x
  2. Step 2: Convert to fraction form
    2,489.29/3,434.39 = 1,440.61/x
  3. Step 3: Cross multiply
    2,489.29x = 3,434.39 × 1,440.61
  4. Step 4: Simplify right side
    2,489.29x = 4,947,616.58
  5. Step 5: Solve for x
    x = 4,947,616.58/2,489.29
  6. Step 6: Final answer
    x = 1,987.56

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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.