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Finding the Fourth Proportional to 8,939.76, 13,404.48 and 3,093.36

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Solution

The fourth proportional to 8,939.76, 13,404.48 and 3,093.36 is: 4,638.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.76 : 13,404.48 = 3,093.36 : x
  2. Step 2: Convert to fraction form
    8,939.76/13,404.48 = 3,093.36/x
  3. Step 3: Cross multiply
    8,939.76x = 13,404.48 × 3,093.36
  4. Step 4: Simplify right side
    8,939.76x = 41,464,882.25
  5. Step 5: Solve for x
    x = 41,464,882.25/8,939.76
  6. Step 6: Final answer
    x = 4,638.25

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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.