Home / 3,942.36-5,435.38-3,231.56

Finding the Fourth Proportional to 3,942.36, 5,435.38 and 3,231.56

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Solution

The fourth proportional to 3,942.36, 5,435.38 and 3,231.56 is: 4,455.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.36 : 5,435.38 = 3,231.56 : x
  2. Step 2: Convert to fraction form
    3,942.36/5,435.38 = 3,231.56/x
  3. Step 3: Cross multiply
    3,942.36x = 5,435.38 × 3,231.56
  4. Step 4: Simplify right side
    3,942.36x = 17,564,756.59
  5. Step 5: Solve for x
    x = 17,564,756.59/3,942.36
  6. Step 6: Final answer
    x = 4,455.39

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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.