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Finding the Fourth Proportional to 8,103.40, 12,155.10 and 8,052.20

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Solution

The fourth proportional to 8,103.40, 12,155.10 and 8,052.20 is: 12,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.40 : 12,155.10 = 8,052.20 : x
  2. Step 2: Convert to fraction form
    8,103.40/12,155.10 = 8,052.20/x
  3. Step 3: Cross multiply
    8,103.40x = 12,155.10 × 8,052.20
  4. Step 4: Simplify right side
    8,103.40x = 97,875,296.22
  5. Step 5: Solve for x
    x = 97,875,296.22/8,103.40
  6. Step 6: Final answer
    x = 12,078.30

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