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Finding the Fourth Proportional to 6,659.17, 9,990.38 and 2,216.82

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Solution

The fourth proportional to 6,659.17, 9,990.38 and 2,216.82 is: 3,325.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.17 : 9,990.38 = 2,216.82 : x
  2. Step 2: Convert to fraction form
    6,659.17/9,990.38 = 2,216.82/x
  3. Step 3: Cross multiply
    6,659.17x = 9,990.38 × 2,216.82
  4. Step 4: Simplify right side
    6,659.17x = 22,146,863.11
  5. Step 5: Solve for x
    x = 22,146,863.11/6,659.17
  6. Step 6: Final answer
    x = 3,325.77

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Similar ratio
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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.