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Finding the Fourth Proportional to 8,692.92, 12,001.74 and 6,699.78

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Solution

The fourth proportional to 8,692.92, 12,001.74 and 6,699.78 is: 9,249.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.92 : 12,001.74 = 6,699.78 : x
  2. Step 2: Convert to fraction form
    8,692.92/12,001.74 = 6,699.78/x
  3. Step 3: Cross multiply
    8,692.92x = 12,001.74 × 6,699.78
  4. Step 4: Simplify right side
    8,692.92x = 80,409,017.62
  5. Step 5: Solve for x
    x = 80,409,017.62/8,692.92
  6. Step 6: Final answer
    x = 9,249.94

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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.