Home / 3,219.20-4,828.80-2,796.80

Finding the Fourth Proportional to 3,219.20, 4,828.80 and 2,796.80

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Solution

The fourth proportional to 3,219.20, 4,828.80 and 2,796.80 is: 4,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.20 : 4,828.80 = 2,796.80 : x
  2. Step 2: Convert to fraction form
    3,219.20/4,828.80 = 2,796.80/x
  3. Step 3: Cross multiply
    3,219.20x = 4,828.80 × 2,796.80
  4. Step 4: Simplify right side
    3,219.20x = 13,505,187.84
  5. Step 5: Solve for x
    x = 13,505,187.84/3,219.20
  6. Step 6: Final answer
    x = 4,195.20

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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.