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Finding the Fourth Proportional to 3,554.42, 5,330.42 and 1,213.52

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Solution

The fourth proportional to 3,554.42, 5,330.42 and 1,213.52 is: 1,819.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.42 : 5,330.42 = 1,213.52 : x
  2. Step 2: Convert to fraction form
    3,554.42/5,330.42 = 1,213.52/x
  3. Step 3: Cross multiply
    3,554.42x = 5,330.42 × 1,213.52
  4. Step 4: Simplify right side
    3,554.42x = 6,468,571.28
  5. Step 5: Solve for x
    x = 6,468,571.28/3,554.42
  6. Step 6: Final answer
    x = 1,819.87

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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.