Home / 4,079.20-5,630.32-2,311.86

Finding the Fourth Proportional to 4,079.20, 5,630.32 and 2,311.86

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Solution

The fourth proportional to 4,079.20, 5,630.32 and 2,311.86 is: 3,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.20 : 5,630.32 = 2,311.86 : x
  2. Step 2: Convert to fraction form
    4,079.20/5,630.32 = 2,311.86/x
  3. Step 3: Cross multiply
    4,079.20x = 5,630.32 × 2,311.86
  4. Step 4: Simplify right side
    4,079.20x = 13,016,511.60
  5. Step 5: Solve for x
    x = 13,016,511.60/4,079.20
  6. Step 6: Final answer
    x = 3,190.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.