Home / 8,115.21-12,172.69-4,416.58

Finding the Fourth Proportional to 8,115.21, 12,172.69 and 4,416.58

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Solution

The fourth proportional to 8,115.21, 12,172.69 and 4,416.58 is: 6,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.21 : 12,172.69 = 4,416.58 : x
  2. Step 2: Convert to fraction form
    8,115.21/12,172.69 = 4,416.58/x
  3. Step 3: Cross multiply
    8,115.21x = 12,172.69 × 4,416.58
  4. Step 4: Simplify right side
    8,115.21x = 53,761,659.20
  5. Step 5: Solve for x
    x = 53,761,659.20/8,115.21
  6. Step 6: Final answer
    x = 6,624.80

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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.