Home / 3,923.88-5,419.78-2,933.58

Finding the Fourth Proportional to 3,923.88, 5,419.78 and 2,933.58

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Solution

The fourth proportional to 3,923.88, 5,419.78 and 2,933.58 is: 4,051.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.88 : 5,419.78 = 2,933.58 : x
  2. Step 2: Convert to fraction form
    3,923.88/5,419.78 = 2,933.58/x
  3. Step 3: Cross multiply
    3,923.88x = 5,419.78 × 2,933.58
  4. Step 4: Simplify right side
    3,923.88x = 15,899,358.21
  5. Step 5: Solve for x
    x = 15,899,358.21/3,923.88
  6. Step 6: Final answer
    x = 4,051.95

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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.