Home / 2,221.65-3,334.52-1,126.78

Finding the Fourth Proportional to 2,221.65, 3,334.52 and 1,126.78

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Solution

The fourth proportional to 2,221.65, 3,334.52 and 1,126.78 is: 1,691.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.65 : 3,334.52 = 1,126.78 : x
  2. Step 2: Convert to fraction form
    2,221.65/3,334.52 = 1,126.78/x
  3. Step 3: Cross multiply
    2,221.65x = 3,334.52 × 1,126.78
  4. Step 4: Simplify right side
    2,221.65x = 3,757,273.94
  5. Step 5: Solve for x
    x = 3,757,273.94/2,221.65
  6. Step 6: Final answer
    x = 1,691.21

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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.