Home / 1,761.36-2,638.31-1,143.23

Finding the Fourth Proportional to 1,761.36, 2,638.31 and 1,143.23

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Solution

The fourth proportional to 1,761.36, 2,638.31 and 1,143.23 is: 1,712.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.36 : 2,638.31 = 1,143.23 : x
  2. Step 2: Convert to fraction form
    1,761.36/2,638.31 = 1,143.23/x
  3. Step 3: Cross multiply
    1,761.36x = 2,638.31 × 1,143.23
  4. Step 4: Simplify right side
    1,761.36x = 3,016,195.14
  5. Step 5: Solve for x
    x = 3,016,195.14/1,761.36
  6. Step 6: Final answer
    x = 1,712.42

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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.