Home / 3,069.21-4,603.86-1,121.61

Finding the Fourth Proportional to 3,069.21, 4,603.86 and 1,121.61

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Solution

The fourth proportional to 3,069.21, 4,603.86 and 1,121.61 is: 1,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,069.21 : 4,603.86 = 1,121.61 : x
  2. Step 2: Convert to fraction form
    3,069.21/4,603.86 = 1,121.61/x
  3. Step 3: Cross multiply
    3,069.21x = 4,603.86 × 1,121.61
  4. Step 4: Simplify right side
    3,069.21x = 5,163,735.41
  5. Step 5: Solve for x
    x = 5,163,735.41/3,069.21
  6. Step 6: Final answer
    x = 1,682.43

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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.