Home / 3,940.20-5,909.82-1,018.71

Finding the Fourth Proportional to 3,940.20, 5,909.82 and 1,018.71

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Solution

The fourth proportional to 3,940.20, 5,909.82 and 1,018.71 is: 1,527.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.20 : 5,909.82 = 1,018.71 : x
  2. Step 2: Convert to fraction form
    3,940.20/5,909.82 = 1,018.71/x
  3. Step 3: Cross multiply
    3,940.20x = 5,909.82 × 1,018.71
  4. Step 4: Simplify right side
    3,940.20x = 6,020,392.73
  5. Step 5: Solve for x
    x = 6,020,392.73/3,940.20
  6. Step 6: Final answer
    x = 1,527.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.