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Finding the Fourth Proportional to 3,467.50, 5,198.16 and 1,275.70

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Solution

The fourth proportional to 3,467.50, 5,198.16 and 1,275.70 is: 1,912.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,467.50 : 5,198.16 = 1,275.70 : x
  2. Step 2: Convert to fraction form
    3,467.50/5,198.16 = 1,275.70/x
  3. Step 3: Cross multiply
    3,467.50x = 5,198.16 × 1,275.70
  4. Step 4: Simplify right side
    3,467.50x = 6,631,292.71
  5. Step 5: Solve for x
    x = 6,631,292.71/3,467.50
  6. Step 6: Final answer
    x = 1,912.41

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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.