Home / 8,115.58-11,198.55-4,578.45

Finding the Fourth Proportional to 8,115.58, 11,198.55 and 4,578.45

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Solution

The fourth proportional to 8,115.58, 11,198.55 and 4,578.45 is: 6,317.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.58 : 11,198.55 = 4,578.45 : x
  2. Step 2: Convert to fraction form
    8,115.58/11,198.55 = 4,578.45/x
  3. Step 3: Cross multiply
    8,115.58x = 11,198.55 × 4,578.45
  4. Step 4: Simplify right side
    8,115.58x = 51,272,001.25
  5. Step 5: Solve for x
    x = 51,272,001.25/8,115.58
  6. Step 6: Final answer
    x = 6,317.72

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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.