Home / 7,141.50-9,855.27-3,997.76

Finding the Fourth Proportional to 7,141.50, 9,855.27 and 3,997.76

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Solution

The fourth proportional to 7,141.50, 9,855.27 and 3,997.76 is: 5,516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.50 : 9,855.27 = 3,997.76 : x
  2. Step 2: Convert to fraction form
    7,141.50/9,855.27 = 3,997.76/x
  3. Step 3: Cross multiply
    7,141.50x = 9,855.27 × 3,997.76
  4. Step 4: Simplify right side
    7,141.50x = 39,398,954.92
  5. Step 5: Solve for x
    x = 39,398,954.92/7,141.50
  6. Step 6: Final answer
    x = 5,516.90

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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.