Home / 3,940.19-5,909.45-1,859.30

Finding the Fourth Proportional to 3,940.19, 5,909.45 and 1,859.30

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Solution

The fourth proportional to 3,940.19, 5,909.45 and 1,859.30 is: 2,788.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.19 : 5,909.45 = 1,859.30 : x
  2. Step 2: Convert to fraction form
    3,940.19/5,909.45 = 1,859.30/x
  3. Step 3: Cross multiply
    3,940.19x = 5,909.45 × 1,859.30
  4. Step 4: Simplify right side
    3,940.19x = 10,987,401.54
  5. Step 5: Solve for x
    x = 10,987,401.54/3,940.19
  6. Step 6: Final answer
    x = 2,788.55

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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.