Home / 1,258.38-1,736.61-727.41

Finding the Fourth Proportional to 1,258.38, 1,736.61 and 727.41

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Solution

The fourth proportional to 1,258.38, 1,736.61 and 727.41 is: 1,003.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.38 : 1,736.61 = 727.41 : x
  2. Step 2: Convert to fraction form
    1,258.38/1,736.61 = 727.41/x
  3. Step 3: Cross multiply
    1,258.38x = 1,736.61 × 727.41
  4. Step 4: Simplify right side
    1,258.38x = 1,263,227.48
  5. Step 5: Solve for x
    x = 1,263,227.48/1,258.38
  6. Step 6: Final answer
    x = 1,003.85

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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.