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Finding the Fourth Proportional to 8,745.86, 13,113.47 and 3,936.44

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Solution

The fourth proportional to 8,745.86, 13,113.47 and 3,936.44 is: 5,902.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.86 : 13,113.47 = 3,936.44 : x
  2. Step 2: Convert to fraction form
    8,745.86/13,113.47 = 3,936.44/x
  3. Step 3: Cross multiply
    8,745.86x = 13,113.47 × 3,936.44
  4. Step 4: Simplify right side
    8,745.86x = 51,620,430.47
  5. Step 5: Solve for x
    x = 51,620,430.47/8,745.86
  6. Step 6: Final answer
    x = 5,902.27

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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.