Home / 8,687.69-13,038.83-3,761.09

Finding the Fourth Proportional to 8,687.69, 13,038.83 and 3,761.09

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Solution

The fourth proportional to 8,687.69, 13,038.83 and 3,761.09 is: 5,644.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.69 : 13,038.83 = 3,761.09 : x
  2. Step 2: Convert to fraction form
    8,687.69/13,038.83 = 3,761.09/x
  3. Step 3: Cross multiply
    8,687.69x = 13,038.83 × 3,761.09
  4. Step 4: Simplify right side
    8,687.69x = 49,040,213.12
  5. Step 5: Solve for x
    x = 49,040,213.12/8,687.69
  6. Step 6: Final answer
    x = 5,644.79

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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.