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Finding the Fourth Proportional to 3,998.38, 5,997.16 and 1,225.08

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Solution

The fourth proportional to 3,998.38, 5,997.16 and 1,225.08 is: 1,837.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.38 : 5,997.16 = 1,225.08 : x
  2. Step 2: Convert to fraction form
    3,998.38/5,997.16 = 1,225.08/x
  3. Step 3: Cross multiply
    3,998.38x = 5,997.16 × 1,225.08
  4. Step 4: Simplify right side
    3,998.38x = 7,347,000.77
  5. Step 5: Solve for x
    x = 7,347,000.77/3,998.38
  6. Step 6: Final answer
    x = 1,837.49

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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.