Home / 3,211.62-4,809.33-2,690.34

Finding the Fourth Proportional to 3,211.62, 4,809.33 and 2,690.34

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Solution

The fourth proportional to 3,211.62, 4,809.33 and 2,690.34 is: 4,028.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.62 : 4,809.33 = 2,690.34 : x
  2. Step 2: Convert to fraction form
    3,211.62/4,809.33 = 2,690.34/x
  3. Step 3: Cross multiply
    3,211.62x = 4,809.33 × 2,690.34
  4. Step 4: Simplify right side
    3,211.62x = 12,938,732.87
  5. Step 5: Solve for x
    x = 12,938,732.87/3,211.62
  6. Step 6: Final answer
    x = 4,028.72

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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.