Home / 2,221.49-3,328.59-759.85

Finding the Fourth Proportional to 2,221.49, 3,328.59 and 759.85

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Solution

The fourth proportional to 2,221.49, 3,328.59 and 759.85 is: 1,138.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.49 : 3,328.59 = 759.85 : x
  2. Step 2: Convert to fraction form
    2,221.49/3,328.59 = 759.85/x
  3. Step 3: Cross multiply
    2,221.49x = 3,328.59 × 759.85
  4. Step 4: Simplify right side
    2,221.49x = 2,529,220.79
  5. Step 5: Solve for x
    x = 2,529,220.79/2,221.49
  6. Step 6: Final answer
    x = 1,138.52

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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.