Home / 8,623.97-12,938.23-2,780.73

Finding the Fourth Proportional to 8,623.97, 12,938.23 and 2,780.73

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Solution

The fourth proportional to 8,623.97, 12,938.23 and 2,780.73 is: 4,171.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.97 : 12,938.23 = 2,780.73 : x
  2. Step 2: Convert to fraction form
    8,623.97/12,938.23 = 2,780.73/x
  3. Step 3: Cross multiply
    8,623.97x = 12,938.23 × 2,780.73
  4. Step 4: Simplify right side
    8,623.97x = 35,977,727.78
  5. Step 5: Solve for x
    x = 35,977,727.78/8,623.97
  6. Step 6: Final answer
    x = 4,171.83

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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.