Home / 8,121.33-12,178.25-3,374.07

Finding the Fourth Proportional to 8,121.33, 12,178.25 and 3,374.07

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Solution

The fourth proportional to 8,121.33, 12,178.25 and 3,374.07 is: 5,059.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.33 : 12,178.25 = 3,374.07 : x
  2. Step 2: Convert to fraction form
    8,121.33/12,178.25 = 3,374.07/x
  3. Step 3: Cross multiply
    8,121.33x = 12,178.25 × 3,374.07
  4. Step 4: Simplify right side
    8,121.33x = 41,090,312.28
  5. Step 5: Solve for x
    x = 41,090,312.28/8,121.33
  6. Step 6: Final answer
    x = 5,059.56

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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.