Home / 3,889.38-5,367.33-2,121.03

Finding the Fourth Proportional to 3,889.38, 5,367.33 and 2,121.03

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Solution

The fourth proportional to 3,889.38, 5,367.33 and 2,121.03 is: 2,927.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.38 : 5,367.33 = 2,121.03 : x
  2. Step 2: Convert to fraction form
    3,889.38/5,367.33 = 2,121.03/x
  3. Step 3: Cross multiply
    3,889.38x = 5,367.33 × 2,121.03
  4. Step 4: Simplify right side
    3,889.38x = 11,384,267.95
  5. Step 5: Solve for x
    x = 11,384,267.95/3,889.38
  6. Step 6: Final answer
    x = 2,927.01

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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.