Home / 1,233.20-1,849.80-1,211.60

Finding the Fourth Proportional to 1,233.20, 1,849.80 and 1,211.60

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Solution

The fourth proportional to 1,233.20, 1,849.80 and 1,211.60 is: 1,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.20 : 1,849.80 = 1,211.60 : x
  2. Step 2: Convert to fraction form
    1,233.20/1,849.80 = 1,211.60/x
  3. Step 3: Cross multiply
    1,233.20x = 1,849.80 × 1,211.60
  4. Step 4: Simplify right side
    1,233.20x = 2,241,217.68
  5. Step 5: Solve for x
    x = 2,241,217.68/1,233.20
  6. Step 6: Final answer
    x = 1,817.40

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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.