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Finding the Fourth Proportional to 8,133.90, 12,200.85 and 7,951.65

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Solution

The fourth proportional to 8,133.90, 12,200.85 and 7,951.65 is: 11,927.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,133.90 : 12,200.85 = 7,951.65 : x
  2. Step 2: Convert to fraction form
    8,133.90/12,200.85 = 7,951.65/x
  3. Step 3: Cross multiply
    8,133.90x = 12,200.85 × 7,951.65
  4. Step 4: Simplify right side
    8,133.90x = 97,016,888.90
  5. Step 5: Solve for x
    x = 97,016,888.90/8,133.90
  6. Step 6: Final answer
    x = 11,927.48

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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.