Home / 8,115.94-12,169.59-4,785.58

Finding the Fourth Proportional to 8,115.94, 12,169.59 and 4,785.58

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Solution

The fourth proportional to 8,115.94, 12,169.59 and 4,785.58 is: 7,175.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.94 : 12,169.59 = 4,785.58 : x
  2. Step 2: Convert to fraction form
    8,115.94/12,169.59 = 4,785.58/x
  3. Step 3: Cross multiply
    8,115.94x = 12,169.59 × 4,785.58
  4. Step 4: Simplify right side
    8,115.94x = 58,238,546.51
  5. Step 5: Solve for x
    x = 58,238,546.51/8,115.94
  6. Step 6: Final answer
    x = 7,175.82

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1.5x scale

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.