Home / 2,220.30-3,330.33-759.45

Finding the Fourth Proportional to 2,220.30, 3,330.33 and 759.45

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Solution

The fourth proportional to 2,220.30, 3,330.33 and 759.45 is: 1,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.30 : 3,330.33 = 759.45 : x
  2. Step 2: Convert to fraction form
    2,220.30/3,330.33 = 759.45/x
  3. Step 3: Cross multiply
    2,220.30x = 3,330.33 × 759.45
  4. Step 4: Simplify right side
    2,220.30x = 2,529,219.12
  5. Step 5: Solve for x
    x = 2,529,219.12/2,220.30
  6. Step 6: Final answer
    x = 1,139.13

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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.