Home / 3,808.89-5,713.62-1,211.85

Finding the Fourth Proportional to 3,808.89, 5,713.62 and 1,211.85

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Solution

The fourth proportional to 3,808.89, 5,713.62 and 1,211.85 is: 1,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.89 : 5,713.62 = 1,211.85 : x
  2. Step 2: Convert to fraction form
    3,808.89/5,713.62 = 1,211.85/x
  3. Step 3: Cross multiply
    3,808.89x = 5,713.62 × 1,211.85
  4. Step 4: Simplify right side
    3,808.89x = 6,924,050.40
  5. Step 5: Solve for x
    x = 6,924,050.40/3,808.89
  6. Step 6: Final answer
    x = 1,817.87

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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.