Home / 3,920.20-5,878.25-2,069.79

Finding the Fourth Proportional to 3,920.20, 5,878.25 and 2,069.79

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Solution

The fourth proportional to 3,920.20, 5,878.25 and 2,069.79 is: 3,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.20 : 5,878.25 = 2,069.79 : x
  2. Step 2: Convert to fraction form
    3,920.20/5,878.25 = 2,069.79/x
  3. Step 3: Cross multiply
    3,920.20x = 5,878.25 × 2,069.79
  4. Step 4: Simplify right side
    3,920.20x = 12,166,737.41
  5. Step 5: Solve for x
    x = 12,166,737.41/3,920.20
  6. Step 6: Final answer
    x = 3,103.60

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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.