Home / 4,067.18-5,615.89-3,121.47

Finding the Fourth Proportional to 4,067.18, 5,615.89 and 3,121.47

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Solution

The fourth proportional to 4,067.18, 5,615.89 and 3,121.47 is: 4,310.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,067.18 : 5,615.89 = 3,121.47 : x
  2. Step 2: Convert to fraction form
    4,067.18/5,615.89 = 3,121.47/x
  3. Step 3: Cross multiply
    4,067.18x = 5,615.89 × 3,121.47
  4. Step 4: Simplify right side
    4,067.18x = 17,529,824.35
  5. Step 5: Solve for x
    x = 17,529,824.35/4,067.18
  6. Step 6: Final answer
    x = 4,310.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.