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Finding the Fourth Proportional to 8,692.90, 11,997.12 and 5,108.38

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Solution

The fourth proportional to 8,692.90, 11,997.12 and 5,108.38 is: 7,050.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.90 : 11,997.12 = 5,108.38 : x
  2. Step 2: Convert to fraction form
    8,692.90/11,997.12 = 5,108.38/x
  3. Step 3: Cross multiply
    8,692.90x = 11,997.12 × 5,108.38
  4. Step 4: Simplify right side
    8,692.90x = 61,285,847.87
  5. Step 5: Solve for x
    x = 61,285,847.87/8,692.90
  6. Step 6: Final answer
    x = 7,050.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.