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Finding the Fourth Proportional to 3,467.80, 5,199.80 and 1,517.72

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Solution

The fourth proportional to 3,467.80, 5,199.80 and 1,517.72 is: 2,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,467.80 : 5,199.80 = 1,517.72 : x
  2. Step 2: Convert to fraction form
    3,467.80/5,199.80 = 1,517.72/x
  3. Step 3: Cross multiply
    3,467.80x = 5,199.80 × 1,517.72
  4. Step 4: Simplify right side
    3,467.80x = 7,891,840.46
  5. Step 5: Solve for x
    x = 7,891,840.46/3,467.80
  6. Step 6: Final answer
    x = 2,275.75

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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.