Home / 8,515.08-12,772.54-2,189.92

Finding the Fourth Proportional to 8,515.08, 12,772.54 and 2,189.92

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Solution

The fourth proportional to 8,515.08, 12,772.54 and 2,189.92 is: 3,284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.08 : 12,772.54 = 2,189.92 : x
  2. Step 2: Convert to fraction form
    8,515.08/12,772.54 = 2,189.92/x
  3. Step 3: Cross multiply
    8,515.08x = 12,772.54 × 2,189.92
  4. Step 4: Simplify right side
    8,515.08x = 27,970,840.80
  5. Step 5: Solve for x
    x = 27,970,840.80/8,515.08
  6. Step 6: Final answer
    x = 3,284.86

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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.