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Finding the Fourth Proportional to 8,001.14, 11,990.43 and 3,779.89

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Solution

The fourth proportional to 8,001.14, 11,990.43 and 3,779.89 is: 5,664.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,001.14 : 11,990.43 = 3,779.89 : x
  2. Step 2: Convert to fraction form
    8,001.14/11,990.43 = 3,779.89/x
  3. Step 3: Cross multiply
    8,001.14x = 11,990.43 × 3,779.89
  4. Step 4: Simplify right side
    8,001.14x = 45,322,506.45
  5. Step 5: Solve for x
    x = 45,322,506.45/8,001.14
  6. Step 6: Final answer
    x = 5,664.51

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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.