Home / 1,378.04-2,067.26-404.15

Finding the Fourth Proportional to 1,378.04, 2,067.26 and 404.15

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Solution

The fourth proportional to 1,378.04, 2,067.26 and 404.15 is: 606.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.04 : 2,067.26 = 404.15 : x
  2. Step 2: Convert to fraction form
    1,378.04/2,067.26 = 404.15/x
  3. Step 3: Cross multiply
    1,378.04x = 2,067.26 × 404.15
  4. Step 4: Simplify right side
    1,378.04x = 835,470.77
  5. Step 5: Solve for x
    x = 835,470.77/1,378.04
  6. Step 6: Final answer
    x = 606.28

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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.