Home / 8,418.75-12,629.96-3,224.63

Finding the Fourth Proportional to 8,418.75, 12,629.96 and 3,224.63

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Solution

The fourth proportional to 8,418.75, 12,629.96 and 3,224.63 is: 4,837.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.75 : 12,629.96 = 3,224.63 : x
  2. Step 2: Convert to fraction form
    8,418.75/12,629.96 = 3,224.63/x
  3. Step 3: Cross multiply
    8,418.75x = 12,629.96 × 3,224.63
  4. Step 4: Simplify right side
    8,418.75x = 40,726,868.64
  5. Step 5: Solve for x
    x = 40,726,868.64/8,418.75
  6. Step 6: Final answer
    x = 4,837.64

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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.