Home / 3,922.41-5,412.97-2,153.98

Finding the Fourth Proportional to 3,922.41, 5,412.97 and 2,153.98

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Solution

The fourth proportional to 3,922.41, 5,412.97 and 2,153.98 is: 2,972.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.41 : 5,412.97 = 2,153.98 : x
  2. Step 2: Convert to fraction form
    3,922.41/5,412.97 = 2,153.98/x
  3. Step 3: Cross multiply
    3,922.41x = 5,412.97 × 2,153.98
  4. Step 4: Simplify right side
    3,922.41x = 11,659,429.12
  5. Step 5: Solve for x
    x = 11,659,429.12/3,922.41
  6. Step 6: Final answer
    x = 2,972.52

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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.