Home / 8,265.20-12,397.79-2,109.20

Finding the Fourth Proportional to 8,265.20, 12,397.79 and 2,109.20

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Solution

The fourth proportional to 8,265.20, 12,397.79 and 2,109.20 is: 3,163.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,265.20 : 12,397.79 = 2,109.20 : x
  2. Step 2: Convert to fraction form
    8,265.20/12,397.79 = 2,109.20/x
  3. Step 3: Cross multiply
    8,265.20x = 12,397.79 × 2,109.20
  4. Step 4: Simplify right side
    8,265.20x = 26,149,346.13
  5. Step 5: Solve for x
    x = 26,149,346.13/8,265.20
  6. Step 6: Final answer
    x = 3,163.79

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1.5x scale

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.