Home / 8,147.39-12,217.64-3,467.21

Finding the Fourth Proportional to 8,147.39, 12,217.64 and 3,467.21

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Solution

The fourth proportional to 8,147.39, 12,217.64 and 3,467.21 is: 5,199.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.39 : 12,217.64 = 3,467.21 : x
  2. Step 2: Convert to fraction form
    8,147.39/12,217.64 = 3,467.21/x
  3. Step 3: Cross multiply
    8,147.39x = 12,217.64 × 3,467.21
  4. Step 4: Simplify right side
    8,147.39x = 42,361,045.16
  5. Step 5: Solve for x
    x = 42,361,045.16/8,147.39
  6. Step 6: Final answer
    x = 5,199.34

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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.