Home / 2,728.18-4,090.92-1,268.38

Finding the Fourth Proportional to 2,728.18, 4,090.92 and 1,268.38

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Solution

The fourth proportional to 2,728.18, 4,090.92 and 1,268.38 is: 1,901.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.18 : 4,090.92 = 1,268.38 : x
  2. Step 2: Convert to fraction form
    2,728.18/4,090.92 = 1,268.38/x
  3. Step 3: Cross multiply
    2,728.18x = 4,090.92 × 1,268.38
  4. Step 4: Simplify right side
    2,728.18x = 5,188,841.11
  5. Step 5: Solve for x
    x = 5,188,841.11/2,728.18
  6. Step 6: Final answer
    x = 1,901.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.