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Finding the Fourth Proportional to 8,887.92, 13,327.80 and 5,191.28

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Solution

The fourth proportional to 8,887.92, 13,327.80 and 5,191.28 is: 7,784.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,887.92 : 13,327.80 = 5,191.28 : x
  2. Step 2: Convert to fraction form
    8,887.92/13,327.80 = 5,191.28/x
  3. Step 3: Cross multiply
    8,887.92x = 13,327.80 × 5,191.28
  4. Step 4: Simplify right side
    8,887.92x = 69,188,341.58
  5. Step 5: Solve for x
    x = 69,188,341.58/8,887.92
  6. Step 6: Final answer
    x = 7,784.54

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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.