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Finding the Fourth Proportional to 8,819.74, 12,171.20 and 4,840.92

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Solution

The fourth proportional to 8,819.74, 12,171.20 and 4,840.92 is: 6,680.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.74 : 12,171.20 = 4,840.92 : x
  2. Step 2: Convert to fraction form
    8,819.74/12,171.20 = 4,840.92/x
  3. Step 3: Cross multiply
    8,819.74x = 12,171.20 × 4,840.92
  4. Step 4: Simplify right side
    8,819.74x = 58,919,781.30
  5. Step 5: Solve for x
    x = 58,919,781.30/8,819.74
  6. Step 6: Final answer
    x = 6,680.45

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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.