Home / 8,109.85-12,164.78-2,563.76

Finding the Fourth Proportional to 8,109.85, 12,164.78 and 2,563.76

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Solution

The fourth proportional to 8,109.85, 12,164.78 and 2,563.76 is: 3,845.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.85 : 12,164.78 = 2,563.76 : x
  2. Step 2: Convert to fraction form
    8,109.85/12,164.78 = 2,563.76/x
  3. Step 3: Cross multiply
    8,109.85x = 12,164.78 × 2,563.76
  4. Step 4: Simplify right side
    8,109.85x = 31,187,576.37
  5. Step 5: Solve for x
    x = 31,187,576.37/8,109.85
  6. Step 6: Final answer
    x = 3,845.64

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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.