Home / 8,115.72-11,199.48-4,578.90

Finding the Fourth Proportional to 8,115.72, 11,199.48 and 4,578.90

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Solution

The fourth proportional to 8,115.72, 11,199.48 and 4,578.90 is: 6,318.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.72 : 11,199.48 = 4,578.90 : x
  2. Step 2: Convert to fraction form
    8,115.72/11,199.48 = 4,578.90/x
  3. Step 3: Cross multiply
    8,115.72x = 11,199.48 × 4,578.90
  4. Step 4: Simplify right side
    8,115.72x = 51,281,298.97
  5. Step 5: Solve for x
    x = 51,281,298.97/8,115.72
  6. Step 6: Final answer
    x = 6,318.76

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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.