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Finding the Fourth Proportional to 7,763, 10,713.66 and 4,451

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Solution

The fourth proportional to 7,763, 10,713.66 and 4,451 is: 6,142.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763 : 10,713.66 = 4,451 : x
  2. Step 2: Convert to fraction form
    7,763/10,713.66 = 4,451/x
  3. Step 3: Cross multiply
    7,763x = 10,713.66 × 4,451
  4. Step 4: Simplify right side
    7,763x = 47,686,500.66
  5. Step 5: Solve for x
    x = 47,686,500.66/7,763
  6. Step 6: Final answer
    x = 6,142.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.