Home / 5,327.08-7,989.90-2,121.64

Finding the Fourth Proportional to 5,327.08, 7,989.90 and 2,121.64

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Solution

The fourth proportional to 5,327.08, 7,989.90 and 2,121.64 is: 3,182.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,327.08 : 7,989.90 = 2,121.64 : x
  2. Step 2: Convert to fraction form
    5,327.08/7,989.90 = 2,121.64/x
  3. Step 3: Cross multiply
    5,327.08x = 7,989.90 × 2,121.64
  4. Step 4: Simplify right side
    5,327.08x = 16,951,691.44
  5. Step 5: Solve for x
    x = 16,951,691.44/5,327.08
  6. Step 6: Final answer
    x = 3,182.17

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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.