Home / 8,080.67-12,120.08-2,814.78

Finding the Fourth Proportional to 8,080.67, 12,120.08 and 2,814.78

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Solution

The fourth proportional to 8,080.67, 12,120.08 and 2,814.78 is: 4,221.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.67 : 12,120.08 = 2,814.78 : x
  2. Step 2: Convert to fraction form
    8,080.67/12,120.08 = 2,814.78/x
  3. Step 3: Cross multiply
    8,080.67x = 12,120.08 × 2,814.78
  4. Step 4: Simplify right side
    8,080.67x = 34,115,344.71
  5. Step 5: Solve for x
    x = 34,115,344.71/8,080.67
  6. Step 6: Final answer
    x = 4,221.85

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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.