Home / 1,381.41-2,067.57-834.66

Finding the Fourth Proportional to 1,381.41, 2,067.57 and 834.66

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Solution

The fourth proportional to 1,381.41, 2,067.57 and 834.66 is: 1,249.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.41 : 2,067.57 = 834.66 : x
  2. Step 2: Convert to fraction form
    1,381.41/2,067.57 = 834.66/x
  3. Step 3: Cross multiply
    1,381.41x = 2,067.57 × 834.66
  4. Step 4: Simplify right side
    1,381.41x = 1,725,717.98
  5. Step 5: Solve for x
    x = 1,725,717.98/1,381.41
  6. Step 6: Final answer
    x = 1,249.24

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1.5x scale

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.