Home / 3,171.82-4,376.60-1,992.05

Finding the Fourth Proportional to 3,171.82, 4,376.60 and 1,992.05

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Solution

The fourth proportional to 3,171.82, 4,376.60 and 1,992.05 is: 2,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.82 : 4,376.60 = 1,992.05 : x
  2. Step 2: Convert to fraction form
    3,171.82/4,376.60 = 1,992.05/x
  3. Step 3: Cross multiply
    3,171.82x = 4,376.60 × 1,992.05
  4. Step 4: Simplify right side
    3,171.82x = 8,718,396.07
  5. Step 5: Solve for x
    x = 8,718,396.07/3,171.82
  6. Step 6: Final answer
    x = 2,748.71

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1.5x scale

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.