Home / 7,163.90-10,745.86-3,878.54

Finding the Fourth Proportional to 7,163.90, 10,745.86 and 3,878.54

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Solution

The fourth proportional to 7,163.90, 10,745.86 and 3,878.54 is: 5,817.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.90 : 10,745.86 = 3,878.54 : x
  2. Step 2: Convert to fraction form
    7,163.90/10,745.86 = 3,878.54/x
  3. Step 3: Cross multiply
    7,163.90x = 10,745.86 × 3,878.54
  4. Step 4: Simplify right side
    7,163.90x = 41,678,247.84
  5. Step 5: Solve for x
    x = 41,678,247.84/7,163.90
  6. Step 6: Final answer
    x = 5,817.82

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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.