Home / 8,109.89-12,165.96-2,843.68

Finding the Fourth Proportional to 8,109.89, 12,165.96 and 2,843.68

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Solution

The fourth proportional to 8,109.89, 12,165.96 and 2,843.68 is: 4,265.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.89 : 12,165.96 = 2,843.68 : x
  2. Step 2: Convert to fraction form
    8,109.89/12,165.96 = 2,843.68/x
  3. Step 3: Cross multiply
    8,109.89x = 12,165.96 × 2,843.68
  4. Step 4: Simplify right side
    8,109.89x = 34,596,097.13
  5. Step 5: Solve for x
    x = 34,596,097.13/8,109.89
  6. Step 6: Final answer
    x = 4,265.91

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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.