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Finding the Fourth Proportional to 3,996.79, 5,995.19 and 1,399.12

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Solution

The fourth proportional to 3,996.79, 5,995.19 and 1,399.12 is: 2,098.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.79 : 5,995.19 = 1,399.12 : x
  2. Step 2: Convert to fraction form
    3,996.79/5,995.19 = 1,399.12/x
  3. Step 3: Cross multiply
    3,996.79x = 5,995.19 × 1,399.12
  4. Step 4: Simplify right side
    3,996.79x = 8,387,990.23
  5. Step 5: Solve for x
    x = 8,387,990.23/3,996.79
  6. Step 6: Final answer
    x = 2,098.68

Related Problems

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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.