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Finding the Fourth Proportional to 8,882.78, 13,301.37 and 8,619.99

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Solution

The fourth proportional to 8,882.78, 13,301.37 and 8,619.99 is: 12,907.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,882.78 : 13,301.37 = 8,619.99 : x
  2. Step 2: Convert to fraction form
    8,882.78/13,301.37 = 8,619.99/x
  3. Step 3: Cross multiply
    8,882.78x = 13,301.37 × 8,619.99
  4. Step 4: Simplify right side
    8,882.78x = 114,657,676.39
  5. Step 5: Solve for x
    x = 114,657,676.39/8,882.78
  6. Step 6: Final answer
    x = 12,907.87

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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.