Home / 3,387.21-5,055.76-3,179.44

Finding the Fourth Proportional to 3,387.21, 5,055.76 and 3,179.44

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Solution

The fourth proportional to 3,387.21, 5,055.76 and 3,179.44 is: 4,745.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.21 : 5,055.76 = 3,179.44 : x
  2. Step 2: Convert to fraction form
    3,387.21/5,055.76 = 3,179.44/x
  3. Step 3: Cross multiply
    3,387.21x = 5,055.76 × 3,179.44
  4. Step 4: Simplify right side
    3,387.21x = 16,074,485.57
  5. Step 5: Solve for x
    x = 16,074,485.57/3,387.21
  6. Step 6: Final answer
    x = 4,745.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.