Home / 2,687.89-4,033.39-1,127.75

Finding the Fourth Proportional to 2,687.89, 4,033.39 and 1,127.75

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Solution

The fourth proportional to 2,687.89, 4,033.39 and 1,127.75 is: 1,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.89 : 4,033.39 = 1,127.75 : x
  2. Step 2: Convert to fraction form
    2,687.89/4,033.39 = 1,127.75/x
  3. Step 3: Cross multiply
    2,687.89x = 4,033.39 × 1,127.75
  4. Step 4: Simplify right side
    2,687.89x = 4,548,649.93
  5. Step 5: Solve for x
    x = 4,548,649.93/2,687.89
  6. Step 6: Final answer
    x = 1,692.28

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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.