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Finding the Fourth Proportional to 8,361.58, 12,542.46 and 2,121.43

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Solution

The fourth proportional to 8,361.58, 12,542.46 and 2,121.43 is: 3,182.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.58 : 12,542.46 = 2,121.43 : x
  2. Step 2: Convert to fraction form
    8,361.58/12,542.46 = 2,121.43/x
  3. Step 3: Cross multiply
    8,361.58x = 12,542.46 × 2,121.43
  4. Step 4: Simplify right side
    8,361.58x = 26,607,950.92
  5. Step 5: Solve for x
    x = 26,607,950.92/8,361.58
  6. Step 6: Final answer
    x = 3,182.17

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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.