Home / 3,900.66-5,382.16-2,222.03

Finding the Fourth Proportional to 3,900.66, 5,382.16 and 2,222.03

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Solution

The fourth proportional to 3,900.66, 5,382.16 and 2,222.03 is: 3,065.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.66 : 5,382.16 = 2,222.03 : x
  2. Step 2: Convert to fraction form
    3,900.66/5,382.16 = 2,222.03/x
  3. Step 3: Cross multiply
    3,900.66x = 5,382.16 × 2,222.03
  4. Step 4: Simplify right side
    3,900.66x = 11,959,282.96
  5. Step 5: Solve for x
    x = 11,959,282.96/3,900.66
  6. Step 6: Final answer
    x = 3,065.97

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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.