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Finding the Fourth Proportional to 3,857.91, 5,779.11 and 1,775.03

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Solution

The fourth proportional to 3,857.91, 5,779.11 and 1,775.03 is: 2,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.91 : 5,779.11 = 1,775.03 : x
  2. Step 2: Convert to fraction form
    3,857.91/5,779.11 = 1,775.03/x
  3. Step 3: Cross multiply
    3,857.91x = 5,779.11 × 1,775.03
  4. Step 4: Simplify right side
    3,857.91x = 10,258,064.73
  5. Step 5: Solve for x
    x = 10,258,064.73/3,857.91
  6. Step 6: Final answer
    x = 2,658.97

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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.