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Finding the Fourth Proportional to 2,796.96, 3,859.60 and 1,617.92

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Solution

The fourth proportional to 2,796.96, 3,859.60 and 1,617.92 is: 2,232.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.96 : 3,859.60 = 1,617.92 : x
  2. Step 2: Convert to fraction form
    2,796.96/3,859.60 = 1,617.92/x
  3. Step 3: Cross multiply
    2,796.96x = 3,859.60 × 1,617.92
  4. Step 4: Simplify right side
    2,796.96x = 6,244,524.03
  5. Step 5: Solve for x
    x = 6,244,524.03/2,796.96
  6. Step 6: Final answer
    x = 2,232.61

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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.