Home / 8,113.40-12,169.20-2,270.60

Finding the Fourth Proportional to 8,113.40, 12,169.20 and 2,270.60

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Solution

The fourth proportional to 8,113.40, 12,169.20 and 2,270.60 is: 3,405.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.40 : 12,169.20 = 2,270.60 : x
  2. Step 2: Convert to fraction form
    8,113.40/12,169.20 = 2,270.60/x
  3. Step 3: Cross multiply
    8,113.40x = 12,169.20 × 2,270.60
  4. Step 4: Simplify right side
    8,113.40x = 27,631,385.52
  5. Step 5: Solve for x
    x = 27,631,385.52/8,113.40
  6. Step 6: Final answer
    x = 3,405.65

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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.