Home / 8,117.40-12,176.10-3,960.09

Finding the Fourth Proportional to 8,117.40, 12,176.10 and 3,960.09

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Solution

The fourth proportional to 8,117.40, 12,176.10 and 3,960.09 is: 5,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.40 : 12,176.10 = 3,960.09 : x
  2. Step 2: Convert to fraction form
    8,117.40/12,176.10 = 3,960.09/x
  3. Step 3: Cross multiply
    8,117.40x = 12,176.10 × 3,960.09
  4. Step 4: Simplify right side
    8,117.40x = 48,218,451.85
  5. Step 5: Solve for x
    x = 48,218,451.85/8,117.40
  6. Step 6: Final answer
    x = 5,940.14

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Half scale
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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.