Home / 1,261.41-1,892.18-481.27

Finding the Fourth Proportional to 1,261.41, 1,892.18 and 481.27

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Solution

The fourth proportional to 1,261.41, 1,892.18 and 481.27 is: 721.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.41 : 1,892.18 = 481.27 : x
  2. Step 2: Convert to fraction form
    1,261.41/1,892.18 = 481.27/x
  3. Step 3: Cross multiply
    1,261.41x = 1,892.18 × 481.27
  4. Step 4: Simplify right side
    1,261.41x = 910,638.80
  5. Step 5: Solve for x
    x = 910,638.80/1,261.41
  6. Step 6: Final answer
    x = 721.92

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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.