Home / 8,361.87-12,542.79-2,122.35

Finding the Fourth Proportional to 8,361.87, 12,542.79 and 2,122.35

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Solution

The fourth proportional to 8,361.87, 12,542.79 and 2,122.35 is: 3,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.87 : 12,542.79 = 2,122.35 : x
  2. Step 2: Convert to fraction form
    8,361.87/12,542.79 = 2,122.35/x
  3. Step 3: Cross multiply
    8,361.87x = 12,542.79 × 2,122.35
  4. Step 4: Simplify right side
    8,361.87x = 26,620,190.36
  5. Step 5: Solve for x
    x = 26,620,190.36/8,361.87
  6. Step 6: Final answer
    x = 3,183.52

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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.