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Finding the Fourth Proportional to 2,645.61, 3,968.97 and 796.86

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Solution

The fourth proportional to 2,645.61, 3,968.97 and 796.86 is: 1,195.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.61 : 3,968.97 = 796.86 : x
  2. Step 2: Convert to fraction form
    2,645.61/3,968.97 = 796.86/x
  3. Step 3: Cross multiply
    2,645.61x = 3,968.97 × 796.86
  4. Step 4: Simplify right side
    2,645.61x = 3,162,713.43
  5. Step 5: Solve for x
    x = 3,162,713.43/2,645.61
  6. Step 6: Final answer
    x = 1,195.46

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1.5x scale

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.