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Finding the Fourth Proportional to 2,474.78, 3,712.80 and 1,745.78

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Solution

The fourth proportional to 2,474.78, 3,712.80 and 1,745.78 is: 2,619.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,474.78 : 3,712.80 = 1,745.78 : x
  2. Step 2: Convert to fraction form
    2,474.78/3,712.80 = 1,745.78/x
  3. Step 3: Cross multiply
    2,474.78x = 3,712.80 × 1,745.78
  4. Step 4: Simplify right side
    2,474.78x = 6,481,731.98
  5. Step 5: Solve for x
    x = 6,481,731.98/2,474.78
  6. Step 6: Final answer
    x = 2,619.11

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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.