Home / 1,258.38-1,736.34-727.14

Finding the Fourth Proportional to 1,258.38, 1,736.34 and 727.14

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Solution

The fourth proportional to 1,258.38, 1,736.34 and 727.14 is: 1,003.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.38 : 1,736.34 = 727.14 : x
  2. Step 2: Convert to fraction form
    1,258.38/1,736.34 = 727.14/x
  3. Step 3: Cross multiply
    1,258.38x = 1,736.34 × 727.14
  4. Step 4: Simplify right side
    1,258.38x = 1,262,562.27
  5. Step 5: Solve for x
    x = 1,262,562.27/1,258.38
  6. Step 6: Final answer
    x = 1,003.32

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1.5x scale

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.