Home / 3,115.49-4,670.09-2,020.55

Finding the Fourth Proportional to 3,115.49, 4,670.09 and 2,020.55

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Solution

The fourth proportional to 3,115.49, 4,670.09 and 2,020.55 is: 3,028.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.49 : 4,670.09 = 2,020.55 : x
  2. Step 2: Convert to fraction form
    3,115.49/4,670.09 = 2,020.55/x
  3. Step 3: Cross multiply
    3,115.49x = 4,670.09 × 2,020.55
  4. Step 4: Simplify right side
    3,115.49x = 9,436,140.25
  5. Step 5: Solve for x
    x = 9,436,140.25/3,115.49
  6. Step 6: Final answer
    x = 3,028.78

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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.