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Finding the Fourth Proportional to 3,808.04, 5,709.89 and 2,779.88

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Solution

The fourth proportional to 3,808.04, 5,709.89 and 2,779.88 is: 4,168.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.04 : 5,709.89 = 2,779.88 : x
  2. Step 2: Convert to fraction form
    3,808.04/5,709.89 = 2,779.88/x
  3. Step 3: Cross multiply
    3,808.04x = 5,709.89 × 2,779.88
  4. Step 4: Simplify right side
    3,808.04x = 15,872,766.56
  5. Step 5: Solve for x
    x = 15,872,766.56/3,808.04
  6. Step 6: Final answer
    x = 4,168.23

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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.