Home / 3,101.82-4,282.75-1,908.42

Finding the Fourth Proportional to 3,101.82, 4,282.75 and 1,908.42

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Solution

The fourth proportional to 3,101.82, 4,282.75 and 1,908.42 is: 2,634.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.82 : 4,282.75 = 1,908.42 : x
  2. Step 2: Convert to fraction form
    3,101.82/4,282.75 = 1,908.42/x
  3. Step 3: Cross multiply
    3,101.82x = 4,282.75 × 1,908.42
  4. Step 4: Simplify right side
    3,101.82x = 8,173,277.45
  5. Step 5: Solve for x
    x = 8,173,277.45/3,101.82
  6. Step 6: Final answer
    x = 2,634.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.