Home / 2,220.36-3,330.96-759.72

Finding the Fourth Proportional to 2,220.36, 3,330.96 and 759.72

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Solution

The fourth proportional to 2,220.36, 3,330.96 and 759.72 is: 1,139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.36 : 3,330.96 = 759.72 : x
  2. Step 2: Convert to fraction form
    2,220.36/3,330.96 = 759.72/x
  3. Step 3: Cross multiply
    2,220.36x = 3,330.96 × 759.72
  4. Step 4: Simplify right side
    2,220.36x = 2,530,596.93
  5. Step 5: Solve for x
    x = 2,530,596.93/2,220.36
  6. Step 6: Final answer
    x = 1,139.72

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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.