Home / 3,180.70-4,771.23-1,331.50

Finding the Fourth Proportional to 3,180.70, 4,771.23 and 1,331.50

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Solution

The fourth proportional to 3,180.70, 4,771.23 and 1,331.50 is: 1,997.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.70 : 4,771.23 = 1,331.50 : x
  2. Step 2: Convert to fraction form
    3,180.70/4,771.23 = 1,331.50/x
  3. Step 3: Cross multiply
    3,180.70x = 4,771.23 × 1,331.50
  4. Step 4: Simplify right side
    3,180.70x = 6,352,892.75
  5. Step 5: Solve for x
    x = 6,352,892.75/3,180.70
  6. Step 6: Final answer
    x = 1,997.33

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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.