Home / 8,129.19-12,193.83-2,285.85

Finding the Fourth Proportional to 8,129.19, 12,193.83 and 2,285.85

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Solution

The fourth proportional to 8,129.19, 12,193.83 and 2,285.85 is: 3,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.19 : 12,193.83 = 2,285.85 : x
  2. Step 2: Convert to fraction form
    8,129.19/12,193.83 = 2,285.85/x
  3. Step 3: Cross multiply
    8,129.19x = 12,193.83 × 2,285.85
  4. Step 4: Simplify right side
    8,129.19x = 27,873,266.31
  5. Step 5: Solve for x
    x = 27,873,266.31/8,129.19
  6. Step 6: Final answer
    x = 3,428.79

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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.