Home / 2,045.21-3,067.75-1,121.21

Finding the Fourth Proportional to 2,045.21, 3,067.75 and 1,121.21

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Solution

The fourth proportional to 2,045.21, 3,067.75 and 1,121.21 is: 1,681.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,045.21 : 3,067.75 = 1,121.21 : x
  2. Step 2: Convert to fraction form
    2,045.21/3,067.75 = 1,121.21/x
  3. Step 3: Cross multiply
    2,045.21x = 3,067.75 × 1,121.21
  4. Step 4: Simplify right side
    2,045.21x = 3,439,571.03
  5. Step 5: Solve for x
    x = 3,439,571.03/2,045.21
  6. Step 6: Final answer
    x = 1,681.77

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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.