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Finding the Fourth Proportional to 8,000.92, 11,940.28 and 7,126.12

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Solution

The fourth proportional to 8,000.92, 11,940.28 and 7,126.12 is: 10,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.92 : 11,940.28 = 7,126.12 : x
  2. Step 2: Convert to fraction form
    8,000.92/11,940.28 = 7,126.12/x
  3. Step 3: Cross multiply
    8,000.92x = 11,940.28 × 7,126.12
  4. Step 4: Simplify right side
    8,000.92x = 85,087,868.11
  5. Step 5: Solve for x
    x = 85,087,868.11/8,000.92
  6. Step 6: Final answer
    x = 10,634.76

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Half scale
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Double scale
Find fourth proportional to 8,001.92, 11,941.77 and 7,127.12
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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.