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Finding the Fourth Proportional to 3,816, 5,265.91 and 2,137.48

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Solution

The fourth proportional to 3,816, 5,265.91 and 2,137.48 is: 2,949.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,816 : 5,265.91 = 2,137.48 : x
  2. Step 2: Convert to fraction form
    3,816/5,265.91 = 2,137.48/x
  3. Step 3: Cross multiply
    3,816x = 5,265.91 × 2,137.48
  4. Step 4: Simplify right side
    3,816x = 11,255,777.31
  5. Step 5: Solve for x
    x = 11,255,777.31/3,816
  6. Step 6: Final answer
    x = 2,949.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.