Home / 7,939.10-11,906.40-3,005.12

Finding the Fourth Proportional to 7,939.10, 11,906.40 and 3,005.12

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Solution

The fourth proportional to 7,939.10, 11,906.40 and 3,005.12 is: 4,506.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.10 : 11,906.40 = 3,005.12 : x
  2. Step 2: Convert to fraction form
    7,939.10/11,906.40 = 3,005.12/x
  3. Step 3: Cross multiply
    7,939.10x = 11,906.40 × 3,005.12
  4. Step 4: Simplify right side
    7,939.10x = 35,780,160.77
  5. Step 5: Solve for x
    x = 35,780,160.77/7,939.10
  6. Step 6: Final answer
    x = 4,506.83

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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.