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Finding the Fourth Proportional to 8,797.98, 12,139.02 and 5,396.80

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Solution

The fourth proportional to 8,797.98, 12,139.02 and 5,396.80 is: 7,446.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,797.98 : 12,139.02 = 5,396.80 : x
  2. Step 2: Convert to fraction form
    8,797.98/12,139.02 = 5,396.80/x
  3. Step 3: Cross multiply
    8,797.98x = 12,139.02 × 5,396.80
  4. Step 4: Simplify right side
    8,797.98x = 65,511,863.14
  5. Step 5: Solve for x
    x = 65,511,863.14/8,797.98
  6. Step 6: Final answer
    x = 7,446.24

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Double scale
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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.