Home / 8,620.23-12,930.08-2,380.62

Finding the Fourth Proportional to 8,620.23, 12,930.08 and 2,380.62

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Solution

The fourth proportional to 8,620.23, 12,930.08 and 2,380.62 is: 3,570.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.23 : 12,930.08 = 2,380.62 : x
  2. Step 2: Convert to fraction form
    8,620.23/12,930.08 = 2,380.62/x
  3. Step 3: Cross multiply
    8,620.23x = 12,930.08 × 2,380.62
  4. Step 4: Simplify right side
    8,620.23x = 30,781,530.50
  5. Step 5: Solve for x
    x = 30,781,530.50/8,620.23
  6. Step 6: Final answer
    x = 3,570.85

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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.