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Finding the Fourth Proportional to 8,105.59, 12,158.39 and 6,259.40

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Solution

The fourth proportional to 8,105.59, 12,158.39 and 6,259.40 is: 9,389.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.59 : 12,158.39 = 6,259.40 : x
  2. Step 2: Convert to fraction form
    8,105.59/12,158.39 = 6,259.40/x
  3. Step 3: Cross multiply
    8,105.59x = 12,158.39 × 6,259.40
  4. Step 4: Simplify right side
    8,105.59x = 76,104,218.54
  5. Step 5: Solve for x
    x = 76,104,218.54/8,105.59
  6. Step 6: Final answer
    x = 9,389.10

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Double scale
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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.