Home / 4,072.76-6,109.56-1,299.68

Finding the Fourth Proportional to 4,072.76, 6,109.56 and 1,299.68

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Solution

The fourth proportional to 4,072.76, 6,109.56 and 1,299.68 is: 1,949.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,072.76 : 6,109.56 = 1,299.68 : x
  2. Step 2: Convert to fraction form
    4,072.76/6,109.56 = 1,299.68/x
  3. Step 3: Cross multiply
    4,072.76x = 6,109.56 × 1,299.68
  4. Step 4: Simplify right side
    4,072.76x = 7,940,472.94
  5. Step 5: Solve for x
    x = 7,940,472.94/4,072.76
  6. Step 6: Final answer
    x = 1,949.65

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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.