Home / 3,933.91-5,419.02-3,185.78

Finding the Fourth Proportional to 3,933.91, 5,419.02 and 3,185.78

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Solution

The fourth proportional to 3,933.91, 5,419.02 and 3,185.78 is: 4,388.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.91 : 5,419.02 = 3,185.78 : x
  2. Step 2: Convert to fraction form
    3,933.91/5,419.02 = 3,185.78/x
  3. Step 3: Cross multiply
    3,933.91x = 5,419.02 × 3,185.78
  4. Step 4: Simplify right side
    3,933.91x = 17,263,778.44
  5. Step 5: Solve for x
    x = 17,263,778.44/3,933.91
  6. Step 6: Final answer
    x = 4,388.46

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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.