Home / 3,179.45-4,771.40-2,141.43

Finding the Fourth Proportional to 3,179.45, 4,771.40 and 2,141.43

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Solution

The fourth proportional to 3,179.45, 4,771.40 and 2,141.43 is: 3,213.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.45 : 4,771.40 = 2,141.43 : x
  2. Step 2: Convert to fraction form
    3,179.45/4,771.40 = 2,141.43/x
  3. Step 3: Cross multiply
    3,179.45x = 4,771.40 × 2,141.43
  4. Step 4: Simplify right side
    3,179.45x = 10,217,608.39
  5. Step 5: Solve for x
    x = 10,217,608.39/3,179.45
  6. Step 6: Final answer
    x = 3,213.65

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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.