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Finding the Fourth Proportional to 7,796.47, 11,687.42 and 2,864.79

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Solution

The fourth proportional to 7,796.47, 11,687.42 and 2,864.79 is: 4,294.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,796.47 : 11,687.42 = 2,864.79 : x
  2. Step 2: Convert to fraction form
    7,796.47/11,687.42 = 2,864.79/x
  3. Step 3: Cross multiply
    7,796.47x = 11,687.42 × 2,864.79
  4. Step 4: Simplify right side
    7,796.47x = 33,482,003.94
  5. Step 5: Solve for x
    x = 33,482,003.94/7,796.47
  6. Step 6: Final answer
    x = 4,294.51

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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.