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Finding the Fourth Proportional to 3,967.91, 5,954.60 and 1,779.09

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Solution

The fourth proportional to 3,967.91, 5,954.60 and 1,779.09 is: 2,669.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.91 : 5,954.60 = 1,779.09 : x
  2. Step 2: Convert to fraction form
    3,967.91/5,954.60 = 1,779.09/x
  3. Step 3: Cross multiply
    3,967.91x = 5,954.60 × 1,779.09
  4. Step 4: Simplify right side
    3,967.91x = 10,593,741.42
  5. Step 5: Solve for x
    x = 10,593,741.42/3,967.91
  6. Step 6: Final answer
    x = 2,669.86

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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.