Home / 8,617.78-12,919.38-5,104

Finding the Fourth Proportional to 8,617.78, 12,919.38 and 5,104

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Solution

The fourth proportional to 8,617.78, 12,919.38 and 5,104 is: 7,651.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.78 : 12,919.38 = 5,104 : x
  2. Step 2: Convert to fraction form
    8,617.78/12,919.38 = 5,104/x
  3. Step 3: Cross multiply
    8,617.78x = 12,919.38 × 5,104
  4. Step 4: Simplify right side
    8,617.78x = 65,940,515.52
  5. Step 5: Solve for x
    x = 65,940,515.52/8,617.78
  6. Step 6: Final answer
    x = 7,651.68

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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.