Home / 3,408.21-5,112.36-2,245.65

Finding the Fourth Proportional to 3,408.21, 5,112.36 and 2,245.65

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Solution

The fourth proportional to 3,408.21, 5,112.36 and 2,245.65 is: 3,368.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.21 : 5,112.36 = 2,245.65 : x
  2. Step 2: Convert to fraction form
    3,408.21/5,112.36 = 2,245.65/x
  3. Step 3: Cross multiply
    3,408.21x = 5,112.36 × 2,245.65
  4. Step 4: Simplify right side
    3,408.21x = 11,480,560.01
  5. Step 5: Solve for x
    x = 11,480,560.01/3,408.21
  6. Step 6: Final answer
    x = 3,368.51

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Half scale
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Double scale
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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.