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Finding the Fourth Proportional to 3,773.86, 5,212.86 and 2,894.20

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Solution

The fourth proportional to 3,773.86, 5,212.86 and 2,894.20 is: 3,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,773.86 : 5,212.86 = 2,894.20 : x
  2. Step 2: Convert to fraction form
    3,773.86/5,212.86 = 2,894.20/x
  3. Step 3: Cross multiply
    3,773.86x = 5,212.86 × 2,894.20
  4. Step 4: Simplify right side
    3,773.86x = 15,087,035.53
  5. Step 5: Solve for x
    x = 15,087,035.53/3,773.86
  6. Step 6: Final answer
    x = 3,997.78

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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.