Home / 5,121.50-7,067.67-2,913.50

Finding the Fourth Proportional to 5,121.50, 7,067.67 and 2,913.50

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Solution

The fourth proportional to 5,121.50, 7,067.67 and 2,913.50 is: 4,020.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.50 : 7,067.67 = 2,913.50 : x
  2. Step 2: Convert to fraction form
    5,121.50/7,067.67 = 2,913.50/x
  3. Step 3: Cross multiply
    5,121.50x = 7,067.67 × 2,913.50
  4. Step 4: Simplify right side
    5,121.50x = 20,591,656.55
  5. Step 5: Solve for x
    x = 20,591,656.55/5,121.50
  6. Step 6: Final answer
    x = 4,020.63

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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.