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Finding the Fourth Proportional to 8,080.64, 11,143.68 and 6,836.48

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Solution

The fourth proportional to 8,080.64, 11,143.68 and 6,836.48 is: 9,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.64 : 11,143.68 = 6,836.48 : x
  2. Step 2: Convert to fraction form
    8,080.64/11,143.68 = 6,836.48/x
  3. Step 3: Cross multiply
    8,080.64x = 11,143.68 × 6,836.48
  4. Step 4: Simplify right side
    8,080.64x = 76,183,545.45
  5. Step 5: Solve for x
    x = 76,183,545.45/8,080.64
  6. Step 6: Final answer
    x = 9,427.91

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1.5x scale

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.