Home / 3,940.59-5,445.85-3,231.33

Finding the Fourth Proportional to 3,940.59, 5,445.85 and 3,231.33

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Solution

The fourth proportional to 3,940.59, 5,445.85 and 3,231.33 is: 4,465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.59 : 5,445.85 = 3,231.33 : x
  2. Step 2: Convert to fraction form
    3,940.59/5,445.85 = 3,231.33/x
  3. Step 3: Cross multiply
    3,940.59x = 5,445.85 × 3,231.33
  4. Step 4: Simplify right side
    3,940.59x = 17,597,338.48
  5. Step 5: Solve for x
    x = 17,597,338.48/3,940.59
  6. Step 6: Final answer
    x = 4,465.66

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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.