Home / 3,901.80-5,384.01-2,223.21

Finding the Fourth Proportional to 3,901.80, 5,384.01 and 2,223.21

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Solution

The fourth proportional to 3,901.80, 5,384.01 and 2,223.21 is: 3,067.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.80 : 5,384.01 = 2,223.21 : x
  2. Step 2: Convert to fraction form
    3,901.80/5,384.01 = 2,223.21/x
  3. Step 3: Cross multiply
    3,901.80x = 5,384.01 × 2,223.21
  4. Step 4: Simplify right side
    3,901.80x = 11,969,784.87
  5. Step 5: Solve for x
    x = 11,969,784.87/3,901.80
  6. Step 6: Final answer
    x = 3,067.76

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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.