Home / 5,121.00-7,680.81-1,998.83

Finding the Fourth Proportional to 5,121.00, 7,680.81 and 1,998.83

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Solution

The fourth proportional to 5,121.00, 7,680.81 and 1,998.83 is: 2,997.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.00 : 7,680.81 = 1,998.83 : x
  2. Step 2: Convert to fraction form
    5,121.00/7,680.81 = 1,998.83/x
  3. Step 3: Cross multiply
    5,121.00x = 7,680.81 × 1,998.83
  4. Step 4: Simplify right side
    5,121.00x = 15,352,614.13
  5. Step 5: Solve for x
    x = 15,352,614.13/5,121.00
  6. Step 6: Final answer
    x = 2,997.97

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Half scale
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Double scale
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Similar ratio
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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.