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Finding the Fourth Proportional to 8,001.80, 11,991.90 and 5,361.80

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Solution

The fourth proportional to 8,001.80, 11,991.90 and 5,361.80 is: 8,035.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,001.80 : 11,991.90 = 5,361.80 : x
  2. Step 2: Convert to fraction form
    8,001.80/11,991.90 = 5,361.80/x
  3. Step 3: Cross multiply
    8,001.80x = 11,991.90 × 5,361.80
  4. Step 4: Simplify right side
    8,001.80x = 64,298,169.42
  5. Step 5: Solve for x
    x = 64,298,169.42/8,001.80
  6. Step 6: Final answer
    x = 8,035.46

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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.