Home / 3,940.30-5,904.07-1,855.36

Finding the Fourth Proportional to 3,940.30, 5,904.07 and 1,855.36

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Solution

The fourth proportional to 3,940.30, 5,904.07 and 1,855.36 is: 2,780.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.30 : 5,904.07 = 1,855.36 : x
  2. Step 2: Convert to fraction form
    3,940.30/5,904.07 = 1,855.36/x
  3. Step 3: Cross multiply
    3,940.30x = 5,904.07 × 1,855.36
  4. Step 4: Simplify right side
    3,940.30x = 10,954,175.32
  5. Step 5: Solve for x
    x = 10,954,175.32/3,940.30
  6. Step 6: Final answer
    x = 2,780.04

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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.