Home / 8,731.68-13,099.92-3,801.72

Finding the Fourth Proportional to 8,731.68, 13,099.92 and 3,801.72

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Solution

The fourth proportional to 8,731.68, 13,099.92 and 3,801.72 is: 5,703.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.68 : 13,099.92 = 3,801.72 : x
  2. Step 2: Convert to fraction form
    8,731.68/13,099.92 = 3,801.72/x
  3. Step 3: Cross multiply
    8,731.68x = 13,099.92 × 3,801.72
  4. Step 4: Simplify right side
    8,731.68x = 49,802,227.86
  5. Step 5: Solve for x
    x = 49,802,227.86/8,731.68
  6. Step 6: Final answer
    x = 5,703.62

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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.