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Finding the Fourth Proportional to 2,745.30, 4,118.64 and 797.70

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Solution

The fourth proportional to 2,745.30, 4,118.64 and 797.70 is: 1,196.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,745.30 : 4,118.64 = 797.70 : x
  2. Step 2: Convert to fraction form
    2,745.30/4,118.64 = 797.70/x
  3. Step 3: Cross multiply
    2,745.30x = 4,118.64 × 797.70
  4. Step 4: Simplify right side
    2,745.30x = 3,285,439.13
  5. Step 5: Solve for x
    x = 3,285,439.13/2,745.30
  6. Step 6: Final answer
    x = 1,196.75

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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.