Home / 1,378.24-2,067.66-556.61

Finding the Fourth Proportional to 1,378.24, 2,067.66 and 556.61

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Solution

The fourth proportional to 1,378.24, 2,067.66 and 556.61 is: 835.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.24 : 2,067.66 = 556.61 : x
  2. Step 2: Convert to fraction form
    1,378.24/2,067.66 = 556.61/x
  3. Step 3: Cross multiply
    1,378.24x = 2,067.66 × 556.61
  4. Step 4: Simplify right side
    1,378.24x = 1,150,869.89
  5. Step 5: Solve for x
    x = 1,150,869.89/1,378.24
  6. Step 6: Final answer
    x = 835.03

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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.