Home / 4,079.88-5,629.77-2,311.38

Finding the Fourth Proportional to 4,079.88, 5,629.77 and 2,311.38

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Solution

The fourth proportional to 4,079.88, 5,629.77 and 2,311.38 is: 3,189.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.88 : 5,629.77 = 2,311.38 : x
  2. Step 2: Convert to fraction form
    4,079.88/5,629.77 = 2,311.38/x
  3. Step 3: Cross multiply
    4,079.88x = 5,629.77 × 2,311.38
  4. Step 4: Simplify right side
    4,079.88x = 13,012,537.78
  5. Step 5: Solve for x
    x = 13,012,537.78/4,079.88
  6. Step 6: Final answer
    x = 3,189.44

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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.