Home / 3,877.11-5,815.60-1,103.81

Finding the Fourth Proportional to 3,877.11, 5,815.60 and 1,103.81

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Solution

The fourth proportional to 3,877.11, 5,815.60 and 1,103.81 is: 1,655.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.11 : 5,815.60 = 1,103.81 : x
  2. Step 2: Convert to fraction form
    3,877.11/5,815.60 = 1,103.81/x
  3. Step 3: Cross multiply
    3,877.11x = 5,815.60 × 1,103.81
  4. Step 4: Simplify right side
    3,877.11x = 6,419,285.60
  5. Step 5: Solve for x
    x = 6,419,285.60/3,877.11
  6. Step 6: Final answer
    x = 1,655.69

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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.