Home / 8,115.24-11,198.78-4,578.40

Finding the Fourth Proportional to 8,115.24, 11,198.78 and 4,578.40

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Solution

The fourth proportional to 8,115.24, 11,198.78 and 4,578.40 is: 6,318.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.24 : 11,198.78 = 4,578.40 : x
  2. Step 2: Convert to fraction form
    8,115.24/11,198.78 = 4,578.40/x
  3. Step 3: Cross multiply
    8,115.24x = 11,198.78 × 4,578.40
  4. Step 4: Simplify right side
    8,115.24x = 51,272,494.35
  5. Step 5: Solve for x
    x = 51,272,494.35/8,115.24
  6. Step 6: Final answer
    x = 6,318.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.