Home / 3,871.38-5,806.62-1,098.30

Finding the Fourth Proportional to 3,871.38, 5,806.62 and 1,098.30

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Solution

The fourth proportional to 3,871.38, 5,806.62 and 1,098.30 is: 1,647.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.38 : 5,806.62 = 1,098.30 : x
  2. Step 2: Convert to fraction form
    3,871.38/5,806.62 = 1,098.30/x
  3. Step 3: Cross multiply
    3,871.38x = 5,806.62 × 1,098.30
  4. Step 4: Simplify right side
    3,871.38x = 6,377,410.75
  5. Step 5: Solve for x
    x = 6,377,410.75/3,871.38
  6. Step 6: Final answer
    x = 1,647.32

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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.