Home / 8,178.76-11,286.30-4,641.49

Finding the Fourth Proportional to 8,178.76, 11,286.30 and 4,641.49

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Solution

The fourth proportional to 8,178.76, 11,286.30 and 4,641.49 is: 6,405.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.76 : 11,286.30 = 4,641.49 : x
  2. Step 2: Convert to fraction form
    8,178.76/11,286.30 = 4,641.49/x
  3. Step 3: Cross multiply
    8,178.76x = 11,286.30 × 4,641.49
  4. Step 4: Simplify right side
    8,178.76x = 52,385,248.59
  5. Step 5: Solve for x
    x = 52,385,248.59/8,178.76
  6. Step 6: Final answer
    x = 6,405.04

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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.