Home / 2,083.73-3,125.39-1,261.78

Finding the Fourth Proportional to 2,083.73, 3,125.39 and 1,261.78

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Solution

The fourth proportional to 2,083.73, 3,125.39 and 1,261.78 is: 1,892.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.73 : 3,125.39 = 1,261.78 : x
  2. Step 2: Convert to fraction form
    2,083.73/3,125.39 = 1,261.78/x
  3. Step 3: Cross multiply
    2,083.73x = 3,125.39 × 1,261.78
  4. Step 4: Simplify right side
    2,083.73x = 3,943,540.47
  5. Step 5: Solve for x
    x = 3,943,540.47/2,083.73
  6. Step 6: Final answer
    x = 1,892.54

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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.