Home / 4,079.37-5,629.42-2,311.55

Finding the Fourth Proportional to 4,079.37, 5,629.42 and 2,311.55

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Solution

The fourth proportional to 4,079.37, 5,629.42 and 2,311.55 is: 3,189.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.37 : 5,629.42 = 2,311.55 : x
  2. Step 2: Convert to fraction form
    4,079.37/5,629.42 = 2,311.55/x
  3. Step 3: Cross multiply
    4,079.37x = 5,629.42 × 2,311.55
  4. Step 4: Simplify right side
    4,079.37x = 13,012,651.88
  5. Step 5: Solve for x
    x = 13,012,651.88/4,079.37
  6. Step 6: Final answer
    x = 3,189.87

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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.