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Finding the Fourth Proportional to 6,449.77, 9,679.38 and 2,943.73

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Solution

The fourth proportional to 6,449.77, 9,679.38 and 2,943.73 is: 4,417.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449.77 : 9,679.38 = 2,943.73 : x
  2. Step 2: Convert to fraction form
    6,449.77/9,679.38 = 2,943.73/x
  3. Step 3: Cross multiply
    6,449.77x = 9,679.38 × 2,943.73
  4. Step 4: Simplify right side
    6,449.77x = 28,493,481.29
  5. Step 5: Solve for x
    x = 28,493,481.29/6,449.77
  6. Step 6: Final answer
    x = 4,417.75

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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.