Home / 3,208.40-4,811.40-2,231.60

Finding the Fourth Proportional to 3,208.40, 4,811.40 and 2,231.60

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Solution

The fourth proportional to 3,208.40, 4,811.40 and 2,231.60 is: 3,346.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.40 : 4,811.40 = 2,231.60 : x
  2. Step 2: Convert to fraction form
    3,208.40/4,811.40 = 2,231.60/x
  3. Step 3: Cross multiply
    3,208.40x = 4,811.40 × 2,231.60
  4. Step 4: Simplify right side
    3,208.40x = 10,737,120.24
  5. Step 5: Solve for x
    x = 10,737,120.24/3,208.40
  6. Step 6: Final answer
    x = 3,346.57

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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.