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Finding the Fourth Proportional to 2,745.66, 4,118.48 and 797.86

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Solution

The fourth proportional to 2,745.66, 4,118.48 and 797.86 is: 1,196.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,745.66 : 4,118.48 = 797.86 : x
  2. Step 2: Convert to fraction form
    2,745.66/4,118.48 = 797.86/x
  3. Step 3: Cross multiply
    2,745.66x = 4,118.48 × 797.86
  4. Step 4: Simplify right side
    2,745.66x = 3,285,970.45
  5. Step 5: Solve for x
    x = 3,285,970.45/2,745.66
  6. Step 6: Final answer
    x = 1,196.79

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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.