Home / 8,115.87-11,199.90-4,579.08

Finding the Fourth Proportional to 8,115.87, 11,199.90 and 4,579.08

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Solution

The fourth proportional to 8,115.87, 11,199.90 and 4,579.08 is: 6,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.87 : 11,199.90 = 4,579.08 : x
  2. Step 2: Convert to fraction form
    8,115.87/11,199.90 = 4,579.08/x
  3. Step 3: Cross multiply
    8,115.87x = 11,199.90 × 4,579.08
  4. Step 4: Simplify right side
    8,115.87x = 51,285,238.09
  5. Step 5: Solve for x
    x = 51,285,238.09/8,115.87
  6. Step 6: Final answer
    x = 6,319.13

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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.