Home / 8,080.67-11,138.62-7,402.70

Finding the Fourth Proportional to 8,080.67, 11,138.62 and 7,402.70

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Solution

The fourth proportional to 8,080.67, 11,138.62 and 7,402.70 is: 10,204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.67 : 11,138.62 = 7,402.70 : x
  2. Step 2: Convert to fraction form
    8,080.67/11,138.62 = 7,402.70/x
  3. Step 3: Cross multiply
    8,080.67x = 11,138.62 × 7,402.70
  4. Step 4: Simplify right side
    8,080.67x = 82,455,843.77
  5. Step 5: Solve for x
    x = 82,455,843.77/8,080.67
  6. Step 6: Final answer
    x = 10,204.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.