Home / 1,175.25-1,621.87-727.18

Finding the Fourth Proportional to 1,175.25, 1,621.87 and 727.18

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Solution

The fourth proportional to 1,175.25, 1,621.87 and 727.18 is: 1,003.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.25 : 1,621.87 = 727.18 : x
  2. Step 2: Convert to fraction form
    1,175.25/1,621.87 = 727.18/x
  3. Step 3: Cross multiply
    1,175.25x = 1,621.87 × 727.18
  4. Step 4: Simplify right side
    1,175.25x = 1,179,391.43
  5. Step 5: Solve for x
    x = 1,179,391.43/1,175.25
  6. Step 6: Final answer
    x = 1,003.52

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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.