Home / 2,220.80-3,331.51-759.56

Finding the Fourth Proportional to 2,220.80, 3,331.51 and 759.56

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Solution

The fourth proportional to 2,220.80, 3,331.51 and 759.56 is: 1,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.80 : 3,331.51 = 759.56 : x
  2. Step 2: Convert to fraction form
    2,220.80/3,331.51 = 759.56/x
  3. Step 3: Cross multiply
    2,220.80x = 3,331.51 × 759.56
  4. Step 4: Simplify right side
    2,220.80x = 2,530,488.17
  5. Step 5: Solve for x
    x = 2,530,488.17/2,220.80
  6. Step 6: Final answer
    x = 1,139.45

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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.