Home / 3,822.80-5,722.05-2,729.30

Finding the Fourth Proportional to 3,822.80, 5,722.05 and 2,729.30

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Solution

The fourth proportional to 3,822.80, 5,722.05 and 2,729.30 is: 4,085.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,822.80 : 5,722.05 = 2,729.30 : x
  2. Step 2: Convert to fraction form
    3,822.80/5,722.05 = 2,729.30/x
  3. Step 3: Cross multiply
    3,822.80x = 5,722.05 × 2,729.30
  4. Step 4: Simplify right side
    3,822.80x = 15,617,191.07
  5. Step 5: Solve for x
    x = 15,617,191.07/3,822.80
  6. Step 6: Final answer
    x = 4,085.28

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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.