Home / 8,623.89-12,936.76-3,692.21

Finding the Fourth Proportional to 8,623.89, 12,936.76 and 3,692.21

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Solution

The fourth proportional to 8,623.89, 12,936.76 and 3,692.21 is: 5,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.89 : 12,936.76 = 3,692.21 : x
  2. Step 2: Convert to fraction form
    8,623.89/12,936.76 = 3,692.21/x
  3. Step 3: Cross multiply
    8,623.89x = 12,936.76 × 3,692.21
  4. Step 4: Simplify right side
    8,623.89x = 47,765,160.73
  5. Step 5: Solve for x
    x = 47,765,160.73/8,623.89
  6. Step 6: Final answer
    x = 5,538.70

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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.