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Finding the Fourth Proportional to 3,991.96, 6,001.38 and 3,266.80

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Solution

The fourth proportional to 3,991.96, 6,001.38 and 3,266.80 is: 4,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.96 : 6,001.38 = 3,266.80 : x
  2. Step 2: Convert to fraction form
    3,991.96/6,001.38 = 3,266.80/x
  3. Step 3: Cross multiply
    3,991.96x = 6,001.38 × 3,266.80
  4. Step 4: Simplify right side
    3,991.96x = 19,605,308.18
  5. Step 5: Solve for x
    x = 19,605,308.18/3,991.96
  6. Step 6: Final answer
    x = 4,911.20

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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.