Home / 2,220.11-3,330.57-659.95

Finding the Fourth Proportional to 2,220.11, 3,330.57 and 659.95

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Solution

The fourth proportional to 2,220.11, 3,330.57 and 659.95 is: 990.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.11 : 3,330.57 = 659.95 : x
  2. Step 2: Convert to fraction form
    2,220.11/3,330.57 = 659.95/x
  3. Step 3: Cross multiply
    2,220.11x = 3,330.57 × 659.95
  4. Step 4: Simplify right side
    2,220.11x = 2,198,000.11
  5. Step 5: Solve for x
    x = 2,198,000.11/2,220.11
  6. Step 6: Final answer
    x = 990.04

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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.