Home / 8,394.21-12,578.49-4,222.59

Finding the Fourth Proportional to 8,394.21, 12,578.49 and 4,222.59

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Solution

The fourth proportional to 8,394.21, 12,578.49 and 4,222.59 is: 6,327.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.21 : 12,578.49 = 4,222.59 : x
  2. Step 2: Convert to fraction form
    8,394.21/12,578.49 = 4,222.59/x
  3. Step 3: Cross multiply
    8,394.21x = 12,578.49 × 4,222.59
  4. Step 4: Simplify right side
    8,394.21x = 53,113,806.09
  5. Step 5: Solve for x
    x = 53,113,806.09/8,394.21
  6. Step 6: Final answer
    x = 6,327.43

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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.