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Finding the Fourth Proportional to 8,676.99, 12,985.87 and 5,512.82

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Solution

The fourth proportional to 8,676.99, 12,985.87 and 5,512.82 is: 8,250.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.99 : 12,985.87 = 5,512.82 : x
  2. Step 2: Convert to fraction form
    8,676.99/12,985.87 = 5,512.82/x
  3. Step 3: Cross multiply
    8,676.99x = 12,985.87 × 5,512.82
  4. Step 4: Simplify right side
    8,676.99x = 71,588,782.54
  5. Step 5: Solve for x
    x = 71,588,782.54/8,676.99
  6. Step 6: Final answer
    x = 8,250.42

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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.