Home / 2,626.68-3,938.66-2,131.76

Finding the Fourth Proportional to 2,626.68, 3,938.66 and 2,131.76

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Solution

The fourth proportional to 2,626.68, 3,938.66 and 2,131.76 is: 3,196.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.68 : 3,938.66 = 2,131.76 : x
  2. Step 2: Convert to fraction form
    2,626.68/3,938.66 = 2,131.76/x
  3. Step 3: Cross multiply
    2,626.68x = 3,938.66 × 2,131.76
  4. Step 4: Simplify right side
    2,626.68x = 8,396,277.84
  5. Step 5: Solve for x
    x = 8,396,277.84/2,626.68
  6. Step 6: Final answer
    x = 3,196.54

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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.