Home / 3,778.21-5,213.43-2,099.35

Finding the Fourth Proportional to 3,778.21, 5,213.43 and 2,099.35

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Solution

The fourth proportional to 3,778.21, 5,213.43 and 2,099.35 is: 2,896.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.21 : 5,213.43 = 2,099.35 : x
  2. Step 2: Convert to fraction form
    3,778.21/5,213.43 = 2,099.35/x
  3. Step 3: Cross multiply
    3,778.21x = 5,213.43 × 2,099.35
  4. Step 4: Simplify right side
    3,778.21x = 10,944,814.22
  5. Step 5: Solve for x
    x = 10,944,814.22/3,778.21
  6. Step 6: Final answer
    x = 2,896.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.