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Finding the Fourth Proportional to 8,885.92, 13,324.80 and 5,189.28

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Solution

The fourth proportional to 8,885.92, 13,324.80 and 5,189.28 is: 7,781.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,885.92 : 13,324.80 = 5,189.28 : x
  2. Step 2: Convert to fraction form
    8,885.92/13,324.80 = 5,189.28/x
  3. Step 3: Cross multiply
    8,885.92x = 13,324.80 × 5,189.28
  4. Step 4: Simplify right side
    8,885.92x = 69,146,118.14
  5. Step 5: Solve for x
    x = 69,146,118.14/8,885.92
  6. Step 6: Final answer
    x = 7,781.54

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1.5x scale

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.