Home / 4,078.20-6,117.30-3,786.60

Finding the Fourth Proportional to 4,078.20, 6,117.30 and 3,786.60

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Solution

The fourth proportional to 4,078.20, 6,117.30 and 3,786.60 is: 5,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.20 : 6,117.30 = 3,786.60 : x
  2. Step 2: Convert to fraction form
    4,078.20/6,117.30 = 3,786.60/x
  3. Step 3: Cross multiply
    4,078.20x = 6,117.30 × 3,786.60
  4. Step 4: Simplify right side
    4,078.20x = 23,163,768.18
  5. Step 5: Solve for x
    x = 23,163,768.18/4,078.20
  6. Step 6: Final answer
    x = 5,679.90

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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.