Home / 5,121.55-7,067.29-2,852.72

Finding the Fourth Proportional to 5,121.55, 7,067.29 and 2,852.72

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Solution

The fourth proportional to 5,121.55, 7,067.29 and 2,852.72 is: 3,936.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.55 : 7,067.29 = 2,852.72 : x
  2. Step 2: Convert to fraction form
    5,121.55/7,067.29 = 2,852.72/x
  3. Step 3: Cross multiply
    5,121.55x = 7,067.29 × 2,852.72
  4. Step 4: Simplify right side
    5,121.55x = 20,160,949.93
  5. Step 5: Solve for x
    x = 20,160,949.93/5,121.55
  6. Step 6: Final answer
    x = 3,936.50

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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.