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Finding the Fourth Proportional to 8,102.76, 11,181.80 and 4,376.76

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Solution

The fourth proportional to 8,102.76, 11,181.80 and 4,376.76 is: 6,039.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.76 : 11,181.80 = 4,376.76 : x
  2. Step 2: Convert to fraction form
    8,102.76/11,181.80 = 4,376.76/x
  3. Step 3: Cross multiply
    8,102.76x = 11,181.80 × 4,376.76
  4. Step 4: Simplify right side
    8,102.76x = 48,940,054.97
  5. Step 5: Solve for x
    x = 48,940,054.97/8,102.76
  6. Step 6: Final answer
    x = 6,039.92

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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.