Home / 8,515.68-12,778.44-3,584.88

Finding the Fourth Proportional to 8,515.68, 12,778.44 and 3,584.88

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Solution

The fourth proportional to 8,515.68, 12,778.44 and 3,584.88 is: 5,379.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.68 : 12,778.44 = 3,584.88 : x
  2. Step 2: Convert to fraction form
    8,515.68/12,778.44 = 3,584.88/x
  3. Step 3: Cross multiply
    8,515.68x = 12,778.44 × 3,584.88
  4. Step 4: Simplify right side
    8,515.68x = 45,809,173.99
  5. Step 5: Solve for x
    x = 45,809,173.99/8,515.68
  6. Step 6: Final answer
    x = 5,379.39

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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.