Home / 5,578.78-8,369.69-3,115.37

Finding the Fourth Proportional to 5,578.78, 8,369.69 and 3,115.37

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Solution

The fourth proportional to 5,578.78, 8,369.69 and 3,115.37 is: 4,673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.78 : 8,369.69 = 3,115.37 : x
  2. Step 2: Convert to fraction form
    5,578.78/8,369.69 = 3,115.37/x
  3. Step 3: Cross multiply
    5,578.78x = 8,369.69 × 3,115.37
  4. Step 4: Simplify right side
    5,578.78x = 26,074,681.14
  5. Step 5: Solve for x
    x = 26,074,681.14/5,578.78
  6. Step 6: Final answer
    x = 4,673.90

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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.