Home / 7,761.09-11,636.61-3,321.65

Finding the Fourth Proportional to 7,761.09, 11,636.61 and 3,321.65

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Solution

The fourth proportional to 7,761.09, 11,636.61 and 3,321.65 is: 4,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,761.09 : 11,636.61 = 3,321.65 : x
  2. Step 2: Convert to fraction form
    7,761.09/11,636.61 = 3,321.65/x
  3. Step 3: Cross multiply
    7,761.09x = 11,636.61 × 3,321.65
  4. Step 4: Simplify right side
    7,761.09x = 38,652,745.61
  5. Step 5: Solve for x
    x = 38,652,745.61/7,761.09
  6. Step 6: Final answer
    x = 4,980.32

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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.