Home / 3,940.83-5,902.76-1,857.71

Finding the Fourth Proportional to 3,940.83, 5,902.76 and 1,857.71

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Solution

The fourth proportional to 3,940.83, 5,902.76 and 1,857.71 is: 2,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.83 : 5,902.76 = 1,857.71 : x
  2. Step 2: Convert to fraction form
    3,940.83/5,902.76 = 1,857.71/x
  3. Step 3: Cross multiply
    3,940.83x = 5,902.76 × 1,857.71
  4. Step 4: Simplify right side
    3,940.83x = 10,965,635.68
  5. Step 5: Solve for x
    x = 10,965,635.68/3,940.83
  6. Step 6: Final answer
    x = 2,782.57

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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.