Home / 2,220.47-3,330.75-759.61

Finding the Fourth Proportional to 2,220.47, 3,330.75 and 759.61

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Solution

The fourth proportional to 2,220.47, 3,330.75 and 759.61 is: 1,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.47 : 3,330.75 = 759.61 : x
  2. Step 2: Convert to fraction form
    2,220.47/3,330.75 = 759.61/x
  3. Step 3: Cross multiply
    2,220.47x = 3,330.75 × 759.61
  4. Step 4: Simplify right side
    2,220.47x = 2,530,054.35
  5. Step 5: Solve for x
    x = 2,530,054.35/2,220.47
  6. Step 6: Final answer
    x = 1,139.43

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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.