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Finding the Fourth Proportional to 2,805.60, 4,209.84 and 1,163.52

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Solution

The fourth proportional to 2,805.60, 4,209.84 and 1,163.52 is: 1,745.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.60 : 4,209.84 = 1,163.52 : x
  2. Step 2: Convert to fraction form
    2,805.60/4,209.84 = 1,163.52/x
  3. Step 3: Cross multiply
    2,805.60x = 4,209.84 × 1,163.52
  4. Step 4: Simplify right side
    2,805.60x = 4,898,233.04
  5. Step 5: Solve for x
    x = 4,898,233.04/2,805.60
  6. Step 6: Final answer
    x = 1,745.88

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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.