Home / 8,212.26-12,320.33-2,665.60

Finding the Fourth Proportional to 8,212.26, 12,320.33 and 2,665.60

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Solution

The fourth proportional to 8,212.26, 12,320.33 and 2,665.60 is: 3,999.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.26 : 12,320.33 = 2,665.60 : x
  2. Step 2: Convert to fraction form
    8,212.26/12,320.33 = 2,665.60/x
  3. Step 3: Cross multiply
    8,212.26x = 12,320.33 × 2,665.60
  4. Step 4: Simplify right side
    8,212.26x = 32,841,071.65
  5. Step 5: Solve for x
    x = 32,841,071.65/8,212.26
  6. Step 6: Final answer
    x = 3,999.03

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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.