Home / 3,847.30-5,772.30-1,382.20

Finding the Fourth Proportional to 3,847.30, 5,772.30 and 1,382.20

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Solution

The fourth proportional to 3,847.30, 5,772.30 and 1,382.20 is: 2,073.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.30 : 5,772.30 = 1,382.20 : x
  2. Step 2: Convert to fraction form
    3,847.30/5,772.30 = 1,382.20/x
  3. Step 3: Cross multiply
    3,847.30x = 5,772.30 × 1,382.20
  4. Step 4: Simplify right side
    3,847.30x = 7,978,473.06
  5. Step 5: Solve for x
    x = 7,978,473.06/3,847.30
  6. Step 6: Final answer
    x = 2,073.79

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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.