Home / 8,078.13-11,153.35-6,186.38

Finding the Fourth Proportional to 8,078.13, 11,153.35 and 6,186.38

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Solution

The fourth proportional to 8,078.13, 11,153.35 and 6,186.38 is: 8,541.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.13 : 11,153.35 = 6,186.38 : x
  2. Step 2: Convert to fraction form
    8,078.13/11,153.35 = 6,186.38/x
  3. Step 3: Cross multiply
    8,078.13x = 11,153.35 × 6,186.38
  4. Step 4: Simplify right side
    8,078.13x = 68,998,778.54
  5. Step 5: Solve for x
    x = 68,998,778.54/8,078.13
  6. Step 6: Final answer
    x = 8,541.43

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Half scale
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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.