Home / 8,515.64-12,778.56-3,584.96

Finding the Fourth Proportional to 8,515.64, 12,778.56 and 3,584.96

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Solution

The fourth proportional to 8,515.64, 12,778.56 and 3,584.96 is: 5,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.64 : 12,778.56 = 3,584.96 : x
  2. Step 2: Convert to fraction form
    8,515.64/12,778.56 = 3,584.96/x
  3. Step 3: Cross multiply
    8,515.64x = 12,778.56 × 3,584.96
  4. Step 4: Simplify right side
    8,515.64x = 45,810,626.46
  5. Step 5: Solve for x
    x = 45,810,626.46/8,515.64
  6. Step 6: Final answer
    x = 5,379.59

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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.