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Finding the Fourth Proportional to 7,841.76, 11,757.96 and 2,646.96

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Solution

The fourth proportional to 7,841.76, 11,757.96 and 2,646.96 is: 3,968.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,841.76 : 11,757.96 = 2,646.96 : x
  2. Step 2: Convert to fraction form
    7,841.76/11,757.96 = 2,646.96/x
  3. Step 3: Cross multiply
    7,841.76x = 11,757.96 × 2,646.96
  4. Step 4: Simplify right side
    7,841.76x = 31,122,849.80
  5. Step 5: Solve for x
    x = 31,122,849.80/7,841.76
  6. Step 6: Final answer
    x = 3,968.86

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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.