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Finding the Fourth Proportional to 3,453.94, 5,179.20 and 1,479.28

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Solution

The fourth proportional to 3,453.94, 5,179.20 and 1,479.28 is: 2,218.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.94 : 5,179.20 = 1,479.28 : x
  2. Step 2: Convert to fraction form
    3,453.94/5,179.20 = 1,479.28/x
  3. Step 3: Cross multiply
    3,453.94x = 5,179.20 × 1,479.28
  4. Step 4: Simplify right side
    3,453.94x = 7,661,486.98
  5. Step 5: Solve for x
    x = 7,661,486.98/3,453.94
  6. Step 6: Final answer
    x = 2,218.19

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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.