Home / 3,211.80-4,817.70-3,163.20

Finding the Fourth Proportional to 3,211.80, 4,817.70 and 3,163.20

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Solution

The fourth proportional to 3,211.80, 4,817.70 and 3,163.20 is: 4,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.80 : 4,817.70 = 3,163.20 : x
  2. Step 2: Convert to fraction form
    3,211.80/4,817.70 = 3,163.20/x
  3. Step 3: Cross multiply
    3,211.80x = 4,817.70 × 3,163.20
  4. Step 4: Simplify right side
    3,211.80x = 15,239,348.64
  5. Step 5: Solve for x
    x = 15,239,348.64/3,211.80
  6. Step 6: Final answer
    x = 4,744.80

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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.