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Finding the Fourth Proportional to 8,813.32, 13,201.98 and 4,919.80

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Solution

The fourth proportional to 8,813.32, 13,201.98 and 4,919.80 is: 7,369.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.32 : 13,201.98 = 4,919.80 : x
  2. Step 2: Convert to fraction form
    8,813.32/13,201.98 = 4,919.80/x
  3. Step 3: Cross multiply
    8,813.32x = 13,201.98 × 4,919.80
  4. Step 4: Simplify right side
    8,813.32x = 64,951,101.20
  5. Step 5: Solve for x
    x = 64,951,101.20/8,813.32
  6. Step 6: Final answer
    x = 7,369.65

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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.