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Finding the Fourth Proportional to 2,773.17, 4,160.45 and 825.38

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Solution

The fourth proportional to 2,773.17, 4,160.45 and 825.38 is: 1,238.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,773.17 : 4,160.45 = 825.38 : x
  2. Step 2: Convert to fraction form
    2,773.17/4,160.45 = 825.38/x
  3. Step 3: Cross multiply
    2,773.17x = 4,160.45 × 825.38
  4. Step 4: Simplify right side
    2,773.17x = 3,433,952.22
  5. Step 5: Solve for x
    x = 3,433,952.22/2,773.17
  6. Step 6: Final answer
    x = 1,238.28

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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.