Home / 7,145.83-9,861.29-4,163.73

Finding the Fourth Proportional to 7,145.83, 9,861.29 and 4,163.73

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Solution

The fourth proportional to 7,145.83, 9,861.29 and 4,163.73 is: 5,745.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.83 : 9,861.29 = 4,163.73 : x
  2. Step 2: Convert to fraction form
    7,145.83/9,861.29 = 4,163.73/x
  3. Step 3: Cross multiply
    7,145.83x = 9,861.29 × 4,163.73
  4. Step 4: Simplify right side
    7,145.83x = 41,059,749.01
  5. Step 5: Solve for x
    x = 41,059,749.01/7,145.83
  6. Step 6: Final answer
    x = 5,745.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.