Home / 1,258.44-1,736.76-727.43

Finding the Fourth Proportional to 1,258.44, 1,736.76 and 727.43

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Solution

The fourth proportional to 1,258.44, 1,736.76 and 727.43 is: 1,003.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.44 : 1,736.76 = 727.43 : x
  2. Step 2: Convert to fraction form
    1,258.44/1,736.76 = 727.43/x
  3. Step 3: Cross multiply
    1,258.44x = 1,736.76 × 727.43
  4. Step 4: Simplify right side
    1,258.44x = 1,263,362.64
  5. Step 5: Solve for x
    x = 1,263,362.64/1,258.44
  6. Step 6: Final answer
    x = 1,003.91

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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.