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Finding the Fourth Proportional to 8,930.84, 13,388.32 and 3,380.32

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Solution

The fourth proportional to 8,930.84, 13,388.32 and 3,380.32 is: 5,067.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.84 : 13,388.32 = 3,380.32 : x
  2. Step 2: Convert to fraction form
    8,930.84/13,388.32 = 3,380.32/x
  3. Step 3: Cross multiply
    8,930.84x = 13,388.32 × 3,380.32
  4. Step 4: Simplify right side
    8,930.84x = 45,256,805.86
  5. Step 5: Solve for x
    x = 45,256,805.86/8,930.84
  6. Step 6: Final answer
    x = 5,067.47

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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.