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Finding the Fourth Proportional to 5,179.79, 7,770.81 and 1,892.88

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Solution

The fourth proportional to 5,179.79, 7,770.81 and 1,892.88 is: 2,839.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.79 : 7,770.81 = 1,892.88 : x
  2. Step 2: Convert to fraction form
    5,179.79/7,770.81 = 1,892.88/x
  3. Step 3: Cross multiply
    5,179.79x = 7,770.81 × 1,892.88
  4. Step 4: Simplify right side
    5,179.79x = 14,709,210.83
  5. Step 5: Solve for x
    x = 14,709,210.83/5,179.79
  6. Step 6: Final answer
    x = 2,839.73

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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.