Home / 7,921.89-11,874.42-2,989.44

Finding the Fourth Proportional to 7,921.89, 11,874.42 and 2,989.44

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Solution

The fourth proportional to 7,921.89, 11,874.42 and 2,989.44 is: 4,480.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.89 : 11,874.42 = 2,989.44 : x
  2. Step 2: Convert to fraction form
    7,921.89/11,874.42 = 2,989.44/x
  3. Step 3: Cross multiply
    7,921.89x = 11,874.42 × 2,989.44
  4. Step 4: Simplify right side
    7,921.89x = 35,497,866.12
  5. Step 5: Solve for x
    x = 35,497,866.12/7,921.89
  6. Step 6: Final answer
    x = 4,480.98

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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.