Home / 8,135.64-12,197.99-4,242.78

Finding the Fourth Proportional to 8,135.64, 12,197.99 and 4,242.78

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Solution

The fourth proportional to 8,135.64, 12,197.99 and 4,242.78 is: 6,361.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.64 : 12,197.99 = 4,242.78 : x
  2. Step 2: Convert to fraction form
    8,135.64/12,197.99 = 4,242.78/x
  3. Step 3: Cross multiply
    8,135.64x = 12,197.99 × 4,242.78
  4. Step 4: Simplify right side
    8,135.64x = 51,753,398.62
  5. Step 5: Solve for x
    x = 51,753,398.62/8,135.64
  6. Step 6: Final answer
    x = 6,361.32

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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.