Home / 3,191.11-4,781.78-2,147.25

Finding the Fourth Proportional to 3,191.11, 4,781.78 and 2,147.25

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Solution

The fourth proportional to 3,191.11, 4,781.78 and 2,147.25 is: 3,217.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.11 : 4,781.78 = 2,147.25 : x
  2. Step 2: Convert to fraction form
    3,191.11/4,781.78 = 2,147.25/x
  3. Step 3: Cross multiply
    3,191.11x = 4,781.78 × 2,147.25
  4. Step 4: Simplify right side
    3,191.11x = 10,267,666.37
  5. Step 5: Solve for x
    x = 10,267,666.37/3,191.11
  6. Step 6: Final answer
    x = 3,217.58

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1.5x scale

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.