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Finding the Fourth Proportional to 3,871.44, 5,808.60 and 1,818

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Solution

The fourth proportional to 3,871.44, 5,808.60 and 1,818 is: 2,727.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.44 : 5,808.60 = 1,818 : x
  2. Step 2: Convert to fraction form
    3,871.44/5,808.60 = 1,818/x
  3. Step 3: Cross multiply
    3,871.44x = 5,808.60 × 1,818
  4. Step 4: Simplify right side
    3,871.44x = 10,560,034.80
  5. Step 5: Solve for x
    x = 10,560,034.80/3,871.44
  6. Step 6: Final answer
    x = 2,727.68

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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.