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Finding the Fourth Proportional to 3,892.53, 5,370.12 and 2,379.33

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Solution

The fourth proportional to 3,892.53, 5,370.12 and 2,379.33 is: 3,282.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.53 : 5,370.12 = 2,379.33 : x
  2. Step 2: Convert to fraction form
    3,892.53/5,370.12 = 2,379.33/x
  3. Step 3: Cross multiply
    3,892.53x = 5,370.12 × 2,379.33
  4. Step 4: Simplify right side
    3,892.53x = 12,777,287.62
  5. Step 5: Solve for x
    x = 12,777,287.62/3,892.53
  6. Step 6: Final answer
    x = 3,282.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.