Home / 6,078.20-9,112.80-3,158.60

Finding the Fourth Proportional to 6,078.20, 9,112.80 and 3,158.60

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Solution

The fourth proportional to 6,078.20, 9,112.80 and 3,158.60 is: 4,735.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.20 : 9,112.80 = 3,158.60 : x
  2. Step 2: Convert to fraction form
    6,078.20/9,112.80 = 3,158.60/x
  3. Step 3: Cross multiply
    6,078.20x = 9,112.80 × 3,158.60
  4. Step 4: Simplify right side
    6,078.20x = 28,783,690.08
  5. Step 5: Solve for x
    x = 28,783,690.08/6,078.20
  6. Step 6: Final answer
    x = 4,735.56

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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.