Home / 3,105.45-4,658.18-1,996.65

Finding the Fourth Proportional to 3,105.45, 4,658.18 and 1,996.65

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Solution

The fourth proportional to 3,105.45, 4,658.18 and 1,996.65 is: 2,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.45 : 4,658.18 = 1,996.65 : x
  2. Step 2: Convert to fraction form
    3,105.45/4,658.18 = 1,996.65/x
  3. Step 3: Cross multiply
    3,105.45x = 4,658.18 × 1,996.65
  4. Step 4: Simplify right side
    3,105.45x = 9,300,745.11
  5. Step 5: Solve for x
    x = 9,300,745.11/3,105.45
  6. Step 6: Final answer
    x = 2,994.98

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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.