Home / 3,202.20-4,803.30-3,121.20

Finding the Fourth Proportional to 3,202.20, 4,803.30 and 3,121.20

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Solution

The fourth proportional to 3,202.20, 4,803.30 and 3,121.20 is: 4,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,202.20 : 4,803.30 = 3,121.20 : x
  2. Step 2: Convert to fraction form
    3,202.20/4,803.30 = 3,121.20/x
  3. Step 3: Cross multiply
    3,202.20x = 4,803.30 × 3,121.20
  4. Step 4: Simplify right side
    3,202.20x = 14,992,059.96
  5. Step 5: Solve for x
    x = 14,992,059.96/3,202.20
  6. Step 6: Final answer
    x = 4,681.80

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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.