Home / 3,087.72-4,261.75-1,968.44

Finding the Fourth Proportional to 3,087.72, 4,261.75 and 1,968.44

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Solution

The fourth proportional to 3,087.72, 4,261.75 and 1,968.44 is: 2,716.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.72 : 4,261.75 = 1,968.44 : x
  2. Step 2: Convert to fraction form
    3,087.72/4,261.75 = 1,968.44/x
  3. Step 3: Cross multiply
    3,087.72x = 4,261.75 × 1,968.44
  4. Step 4: Simplify right side
    3,087.72x = 8,388,972.94
  5. Step 5: Solve for x
    x = 8,388,972.94/3,087.72
  6. Step 6: Final answer
    x = 2,716.88

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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.