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Finding the Fourth Proportional to 3,519.27, 5,278.55 and 922.21

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Solution

The fourth proportional to 3,519.27, 5,278.55 and 922.21 is: 1,383.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,519.27 : 5,278.55 = 922.21 : x
  2. Step 2: Convert to fraction form
    3,519.27/5,278.55 = 922.21/x
  3. Step 3: Cross multiply
    3,519.27x = 5,278.55 × 922.21
  4. Step 4: Simplify right side
    3,519.27x = 4,867,913.79
  5. Step 5: Solve for x
    x = 4,867,913.79/3,519.27
  6. Step 6: Final answer
    x = 1,383.22

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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.