Home / 2,186.72-3,280.80-2,067.20

Finding the Fourth Proportional to 2,186.72, 3,280.80 and 2,067.20

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Solution

The fourth proportional to 2,186.72, 3,280.80 and 2,067.20 is: 3,101.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.72 : 3,280.80 = 2,067.20 : x
  2. Step 2: Convert to fraction form
    2,186.72/3,280.80 = 2,067.20/x
  3. Step 3: Cross multiply
    2,186.72x = 3,280.80 × 2,067.20
  4. Step 4: Simplify right side
    2,186.72x = 6,782,069.76
  5. Step 5: Solve for x
    x = 6,782,069.76/2,186.72
  6. Step 6: Final answer
    x = 3,101.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.