Home / 3,922.22-5,412.67-2,153.83

Finding the Fourth Proportional to 3,922.22, 5,412.67 and 2,153.83

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Solution

The fourth proportional to 3,922.22, 5,412.67 and 2,153.83 is: 2,972.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.22 : 5,412.67 = 2,153.83 : x
  2. Step 2: Convert to fraction form
    3,922.22/5,412.67 = 2,153.83/x
  3. Step 3: Cross multiply
    3,922.22x = 5,412.67 × 2,153.83
  4. Step 4: Simplify right side
    3,922.22x = 11,657,971.03
  5. Step 5: Solve for x
    x = 11,657,971.03/3,922.22
  6. Step 6: Final answer
    x = 2,972.29

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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.