Home / 5,121.01-7,067.90-4,887.28

Finding the Fourth Proportional to 5,121.01, 7,067.90 and 4,887.28

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Solution

The fourth proportional to 5,121.01, 7,067.90 and 4,887.28 is: 6,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.01 : 7,067.90 = 4,887.28 : x
  2. Step 2: Convert to fraction form
    5,121.01/7,067.90 = 4,887.28/x
  3. Step 3: Cross multiply
    5,121.01x = 7,067.90 × 4,887.28
  4. Step 4: Simplify right side
    5,121.01x = 34,542,746.54
  5. Step 5: Solve for x
    x = 34,542,746.54/5,121.01
  6. Step 6: Final answer
    x = 6,745.30

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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.