Home / 1,939.30-2,676.37-1,142.66

Finding the Fourth Proportional to 1,939.30, 2,676.37 and 1,142.66

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Solution

The fourth proportional to 1,939.30, 2,676.37 and 1,142.66 is: 1,576.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.30 : 2,676.37 = 1,142.66 : x
  2. Step 2: Convert to fraction form
    1,939.30/2,676.37 = 1,142.66/x
  3. Step 3: Cross multiply
    1,939.30x = 2,676.37 × 1,142.66
  4. Step 4: Simplify right side
    1,939.30x = 3,058,180.94
  5. Step 5: Solve for x
    x = 3,058,180.94/1,939.30
  6. Step 6: Final answer
    x = 1,576.95

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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.