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Finding the Fourth Proportional to 3,996.17, 5,994.25 and 3,990.39

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Solution

The fourth proportional to 3,996.17, 5,994.25 and 3,990.39 is: 5,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.17 : 5,994.25 = 3,990.39 : x
  2. Step 2: Convert to fraction form
    3,996.17/5,994.25 = 3,990.39/x
  3. Step 3: Cross multiply
    3,996.17x = 5,994.25 × 3,990.39
  4. Step 4: Simplify right side
    3,996.17x = 23,919,395.26
  5. Step 5: Solve for x
    x = 23,919,395.26/3,996.17
  6. Step 6: Final answer
    x = 5,985.58

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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.