Home / 1,258.11-1,736.28-727.10

Finding the Fourth Proportional to 1,258.11, 1,736.28 and 727.10

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Solution

The fourth proportional to 1,258.11, 1,736.28 and 727.10 is: 1,003.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.11 : 1,736.28 = 727.10 : x
  2. Step 2: Convert to fraction form
    1,258.11/1,736.28 = 727.10/x
  3. Step 3: Cross multiply
    1,258.11x = 1,736.28 × 727.10
  4. Step 4: Simplify right side
    1,258.11x = 1,262,436.87
  5. Step 5: Solve for x
    x = 1,262,436.87/1,258.11
  6. Step 6: Final answer
    x = 1,003.44

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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.