Home / 7,936.21-11,912.06-3,779.09

Finding the Fourth Proportional to 7,936.21, 11,912.06 and 3,779.09

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Solution

The fourth proportional to 7,936.21, 11,912.06 and 3,779.09 is: 5,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,936.21 : 11,912.06 = 3,779.09 : x
  2. Step 2: Convert to fraction form
    7,936.21/11,912.06 = 3,779.09/x
  3. Step 3: Cross multiply
    7,936.21x = 11,912.06 × 3,779.09
  4. Step 4: Simplify right side
    7,936.21x = 45,016,741.38
  5. Step 5: Solve for x
    x = 45,016,741.38/7,936.21
  6. Step 6: Final answer
    x = 5,672.32

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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.