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Finding the Fourth Proportional to 3,518.26, 5,276.78 and 1,327

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Solution

The fourth proportional to 3,518.26, 5,276.78 and 1,327 is: 1,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.26 : 5,276.78 = 1,327 : x
  2. Step 2: Convert to fraction form
    3,518.26/5,276.78 = 1,327/x
  3. Step 3: Cross multiply
    3,518.26x = 5,276.78 × 1,327
  4. Step 4: Simplify right side
    3,518.26x = 7,002,287.06
  5. Step 5: Solve for x
    x = 7,002,287.06/3,518.26
  6. Step 6: Final answer
    x = 1,990.27

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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.