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Finding the Fourth Proportional to 3,229.55, 4,844.22 and 921.05

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Solution

The fourth proportional to 3,229.55, 4,844.22 and 921.05 is: 1,381.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229.55 : 4,844.22 = 921.05 : x
  2. Step 2: Convert to fraction form
    3,229.55/4,844.22 = 921.05/x
  3. Step 3: Cross multiply
    3,229.55x = 4,844.22 × 921.05
  4. Step 4: Simplify right side
    3,229.55x = 4,461,791.75
  5. Step 5: Solve for x
    x = 4,461,791.75/3,229.55
  6. Step 6: Final answer
    x = 1,381.55

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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.