Home / 1,378.03-2,067.11-404.14

Finding the Fourth Proportional to 1,378.03, 2,067.11 and 404.14

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Solution

The fourth proportional to 1,378.03, 2,067.11 and 404.14 is: 606.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.03 : 2,067.11 = 404.14 : x
  2. Step 2: Convert to fraction form
    1,378.03/2,067.11 = 404.14/x
  3. Step 3: Cross multiply
    1,378.03x = 2,067.11 × 404.14
  4. Step 4: Simplify right side
    1,378.03x = 835,401.84
  5. Step 5: Solve for x
    x = 835,401.84/1,378.03
  6. Step 6: Final answer
    x = 606.23

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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.