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Finding the Fourth Proportional to 5,578.88, 8,369.74 and 3,938.63

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Solution

The fourth proportional to 5,578.88, 8,369.74 and 3,938.63 is: 5,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.88 : 8,369.74 = 3,938.63 : x
  2. Step 2: Convert to fraction form
    5,578.88/8,369.74 = 3,938.63/x
  3. Step 3: Cross multiply
    5,578.88x = 8,369.74 × 3,938.63
  4. Step 4: Simplify right side
    5,578.88x = 32,965,309.06
  5. Step 5: Solve for x
    x = 32,965,309.06/5,578.88
  6. Step 6: Final answer
    x = 5,908.95

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1.5x scale

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.