Home / 2,625.26-3,928.81-2,151.25

Finding the Fourth Proportional to 2,625.26, 3,928.81 and 2,151.25

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Solution

The fourth proportional to 2,625.26, 3,928.81 and 2,151.25 is: 3,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.26 : 3,928.81 = 2,151.25 : x
  2. Step 2: Convert to fraction form
    2,625.26/3,928.81 = 2,151.25/x
  3. Step 3: Cross multiply
    2,625.26x = 3,928.81 × 2,151.25
  4. Step 4: Simplify right side
    2,625.26x = 8,451,859.41
  5. Step 5: Solve for x
    x = 8,451,859.41/2,625.26
  6. Step 6: Final answer
    x = 3,219.44

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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.