Home / 2,642.14-3,963.82-1,408.90

Finding the Fourth Proportional to 2,642.14, 3,963.82 and 1,408.90

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Solution

The fourth proportional to 2,642.14, 3,963.82 and 1,408.90 is: 2,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.14 : 3,963.82 = 1,408.90 : x
  2. Step 2: Convert to fraction form
    2,642.14/3,963.82 = 1,408.90/x
  3. Step 3: Cross multiply
    2,642.14x = 3,963.82 × 1,408.90
  4. Step 4: Simplify right side
    2,642.14x = 5,584,626.00
  5. Step 5: Solve for x
    x = 5,584,626.00/2,642.14
  6. Step 6: Final answer
    x = 2,113.68

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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.