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Finding the Fourth Proportional to 7,958.68, 11,939.46 and 2,763.16

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Solution

The fourth proportional to 7,958.68, 11,939.46 and 2,763.16 is: 4,145.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,958.68 : 11,939.46 = 2,763.16 : x
  2. Step 2: Convert to fraction form
    7,958.68/11,939.46 = 2,763.16/x
  3. Step 3: Cross multiply
    7,958.68x = 11,939.46 × 2,763.16
  4. Step 4: Simplify right side
    7,958.68x = 32,990,638.29
  5. Step 5: Solve for x
    x = 32,990,638.29/7,958.68
  6. Step 6: Final answer
    x = 4,145.24

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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.