Home / 3,171.05-4,376.21-1,992.50

Finding the Fourth Proportional to 3,171.05, 4,376.21 and 1,992.50

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Solution

The fourth proportional to 3,171.05, 4,376.21 and 1,992.50 is: 2,749.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.05 : 4,376.21 = 1,992.50 : x
  2. Step 2: Convert to fraction form
    3,171.05/4,376.21 = 1,992.50/x
  3. Step 3: Cross multiply
    3,171.05x = 4,376.21 × 1,992.50
  4. Step 4: Simplify right side
    3,171.05x = 8,719,576.54
  5. Step 5: Solve for x
    x = 8,719,576.54/3,171.05
  6. Step 6: Final answer
    x = 2,749.75

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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.