Home / 8,126.07-12,189.11-2,859.84

Finding the Fourth Proportional to 8,126.07, 12,189.11 and 2,859.84

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Solution

The fourth proportional to 8,126.07, 12,189.11 and 2,859.84 is: 4,289.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.07 : 12,189.11 = 2,859.84 : x
  2. Step 2: Convert to fraction form
    8,126.07/12,189.11 = 2,859.84/x
  3. Step 3: Cross multiply
    8,126.07x = 12,189.11 × 2,859.84
  4. Step 4: Simplify right side
    8,126.07x = 34,858,890.04
  5. Step 5: Solve for x
    x = 34,858,890.04/8,126.07
  6. Step 6: Final answer
    x = 4,289.76

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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.