Home / 3,147.83-4,722.90-1,299.10

Finding the Fourth Proportional to 3,147.83, 4,722.90 and 1,299.10

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Solution

The fourth proportional to 3,147.83, 4,722.90 and 1,299.10 is: 1,949.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.83 : 4,722.90 = 1,299.10 : x
  2. Step 2: Convert to fraction form
    3,147.83/4,722.90 = 1,299.10/x
  3. Step 3: Cross multiply
    3,147.83x = 4,722.90 × 1,299.10
  4. Step 4: Simplify right side
    3,147.83x = 6,135,519.39
  5. Step 5: Solve for x
    x = 6,135,519.39/3,147.83
  6. Step 6: Final answer
    x = 1,949.13

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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.