Home / 3,972,240-5,481,778.68-2,161,404

Finding the Fourth Proportional to 3,972,240, 5,481,778.68 and 2,161,404

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Solution

The fourth proportional to 3,972,240, 5,481,778.68 and 2,161,404 is: 2,982,785.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972,240 : 5,481,778.68 = 2,161,404 : x
  2. Step 2: Convert to fraction form
    3,972,240/5,481,778.68 = 2,161,404/x
  3. Step 3: Cross multiply
    3,972,240x = 5,481,778.68 × 2,161,404
  4. Step 4: Simplify right side
    3,972,240x = 11,848,338,366,066.72
  5. Step 5: Solve for x
    x = 11,848,338,366,066.72/3,972,240
  6. Step 6: Final answer
    x = 2,982,785.12

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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.