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Finding the Fourth Proportional to 8,147.04, 12,220.08 and 7,928.16

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Solution

The fourth proportional to 8,147.04, 12,220.08 and 7,928.16 is: 11,891.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.04 : 12,220.08 = 7,928.16 : x
  2. Step 2: Convert to fraction form
    8,147.04/12,220.08 = 7,928.16/x
  3. Step 3: Cross multiply
    8,147.04x = 12,220.08 × 7,928.16
  4. Step 4: Simplify right side
    8,147.04x = 96,882,749.45
  5. Step 5: Solve for x
    x = 96,882,749.45/8,147.04
  6. Step 6: Final answer
    x = 11,891.77

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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.