Home / 5,578.78-8,369.70-3,115.38

Finding the Fourth Proportional to 5,578.78, 8,369.70 and 3,115.38

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Solution

The fourth proportional to 5,578.78, 8,369.70 and 3,115.38 is: 4,673.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.78 : 8,369.70 = 3,115.38 : x
  2. Step 2: Convert to fraction form
    5,578.78/8,369.70 = 3,115.38/x
  3. Step 3: Cross multiply
    5,578.78x = 8,369.70 × 3,115.38
  4. Step 4: Simplify right side
    5,578.78x = 26,074,795.99
  5. Step 5: Solve for x
    x = 26,074,795.99/5,578.78
  6. Step 6: Final answer
    x = 4,673.92

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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.