Home / 8,179.43-12,270.95-2,985.30

Finding the Fourth Proportional to 8,179.43, 12,270.95 and 2,985.30

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Solution

The fourth proportional to 8,179.43, 12,270.95 and 2,985.30 is: 4,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.43 : 12,270.95 = 2,985.30 : x
  2. Step 2: Convert to fraction form
    8,179.43/12,270.95 = 2,985.30/x
  3. Step 3: Cross multiply
    8,179.43x = 12,270.95 × 2,985.30
  4. Step 4: Simplify right side
    8,179.43x = 36,632,452.11
  5. Step 5: Solve for x
    x = 36,632,452.11/8,179.43
  6. Step 6: Final answer
    x = 4,478.61

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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.