Home / 2,220.12-3,329.91-759.15

Finding the Fourth Proportional to 2,220.12, 3,329.91 and 759.15

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Solution

The fourth proportional to 2,220.12, 3,329.91 and 759.15 is: 1,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.12 : 3,329.91 = 759.15 : x
  2. Step 2: Convert to fraction form
    2,220.12/3,329.91 = 759.15/x
  3. Step 3: Cross multiply
    2,220.12x = 3,329.91 × 759.15
  4. Step 4: Simplify right side
    2,220.12x = 2,527,901.18
  5. Step 5: Solve for x
    x = 2,527,901.18/2,220.12
  6. Step 6: Final answer
    x = 1,138.63

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1.5x scale

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.