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Finding the Fourth Proportional to 2,577.31, 3,865.94 and 629.53

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Solution

The fourth proportional to 2,577.31, 3,865.94 and 629.53 is: 944.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.31 : 3,865.94 = 629.53 : x
  2. Step 2: Convert to fraction form
    2,577.31/3,865.94 = 629.53/x
  3. Step 3: Cross multiply
    2,577.31x = 3,865.94 × 629.53
  4. Step 4: Simplify right side
    2,577.31x = 2,433,734.73
  5. Step 5: Solve for x
    x = 2,433,734.73/2,577.31
  6. Step 6: Final answer
    x = 944.29

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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.