Home / 2,628.16-3,936.85-2,105.33

Finding the Fourth Proportional to 2,628.16, 3,936.85 and 2,105.33

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Solution

The fourth proportional to 2,628.16, 3,936.85 and 2,105.33 is: 3,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.16 : 3,936.85 = 2,105.33 : x
  2. Step 2: Convert to fraction form
    2,628.16/3,936.85 = 2,105.33/x
  3. Step 3: Cross multiply
    2,628.16x = 3,936.85 × 2,105.33
  4. Step 4: Simplify right side
    2,628.16x = 8,288,338.20
  5. Step 5: Solve for x
    x = 8,288,338.20/2,628.16
  6. Step 6: Final answer
    x = 3,153.67

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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.