Home / 8,239.20-12,360.78-2,692.56

Finding the Fourth Proportional to 8,239.20, 12,360.78 and 2,692.56

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Solution

The fourth proportional to 8,239.20, 12,360.78 and 2,692.56 is: 4,039.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.20 : 12,360.78 = 2,692.56 : x
  2. Step 2: Convert to fraction form
    8,239.20/12,360.78 = 2,692.56/x
  3. Step 3: Cross multiply
    8,239.20x = 12,360.78 × 2,692.56
  4. Step 4: Simplify right side
    8,239.20x = 33,282,141.80
  5. Step 5: Solve for x
    x = 33,282,141.80/8,239.20
  6. Step 6: Final answer
    x = 4,039.49

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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.