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Finding the Fourth Proportional to 8,480.80, 12,671.00 and 8,190.11

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Solution

The fourth proportional to 8,480.80, 12,671.00 and 8,190.11 is: 12,236.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.80 : 12,671.00 = 8,190.11 : x
  2. Step 2: Convert to fraction form
    8,480.80/12,671.00 = 8,190.11/x
  3. Step 3: Cross multiply
    8,480.80x = 12,671.00 × 8,190.11
  4. Step 4: Simplify right side
    8,480.80x = 103,776,905.25
  5. Step 5: Solve for x
    x = 103,776,905.25/8,480.80
  6. Step 6: Final answer
    x = 12,236.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.