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Finding the Fourth Proportional to 8,843.32, 12,210.54 and 6,630.28

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Solution

The fourth proportional to 8,843.32, 12,210.54 and 6,630.28 is: 9,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,843.32 : 12,210.54 = 6,630.28 : x
  2. Step 2: Convert to fraction form
    8,843.32/12,210.54 = 6,630.28/x
  3. Step 3: Cross multiply
    8,843.32x = 12,210.54 × 6,630.28
  4. Step 4: Simplify right side
    8,843.32x = 80,959,299.15
  5. Step 5: Solve for x
    x = 80,959,299.15/8,843.32
  6. Step 6: Final answer
    x = 9,154.85

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.