Home / 4,142.12-6,206.22-3,989

Finding the Fourth Proportional to 4,142.12, 6,206.22 and 3,989

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Solution

The fourth proportional to 4,142.12, 6,206.22 and 3,989 is: 5,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.12 : 6,206.22 = 3,989 : x
  2. Step 2: Convert to fraction form
    4,142.12/6,206.22 = 3,989/x
  3. Step 3: Cross multiply
    4,142.12x = 6,206.22 × 3,989
  4. Step 4: Simplify right side
    4,142.12x = 24,756,611.58
  5. Step 5: Solve for x
    x = 24,756,611.58/4,142.12
  6. Step 6: Final answer
    x = 5,976.80

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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.