Home / 4,101.80-6,138.30-2,805.80

Finding the Fourth Proportional to 4,101.80, 6,138.30 and 2,805.80

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Solution

The fourth proportional to 4,101.80, 6,138.30 and 2,805.80 is: 4,198.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,101.80 : 6,138.30 = 2,805.80 : x
  2. Step 2: Convert to fraction form
    4,101.80/6,138.30 = 2,805.80/x
  3. Step 3: Cross multiply
    4,101.80x = 6,138.30 × 2,805.80
  4. Step 4: Simplify right side
    4,101.80x = 17,222,842.14
  5. Step 5: Solve for x
    x = 17,222,842.14/4,101.80
  6. Step 6: Final answer
    x = 4,198.85

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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.