Home / 5,121.50-7,067.80-2,883.46

Finding the Fourth Proportional to 5,121.50, 7,067.80 and 2,883.46

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Solution

The fourth proportional to 5,121.50, 7,067.80 and 2,883.46 is: 3,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.50 : 7,067.80 = 2,883.46 : x
  2. Step 2: Convert to fraction form
    5,121.50/7,067.80 = 2,883.46/x
  3. Step 3: Cross multiply
    5,121.50x = 7,067.80 × 2,883.46
  4. Step 4: Simplify right side
    5,121.50x = 20,379,717.77
  5. Step 5: Solve for x
    x = 20,379,717.77/5,121.50
  6. Step 6: Final answer
    x = 3,979.25

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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.