Home / 7,222.06-10,831.80-5,135.80

Finding the Fourth Proportional to 7,222.06, 10,831.80 and 5,135.80

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Solution

The fourth proportional to 7,222.06, 10,831.80 and 5,135.80 is: 7,702.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.06 : 10,831.80 = 5,135.80 : x
  2. Step 2: Convert to fraction form
    7,222.06/10,831.80 = 5,135.80/x
  3. Step 3: Cross multiply
    7,222.06x = 10,831.80 × 5,135.80
  4. Step 4: Simplify right side
    7,222.06x = 55,629,958.44
  5. Step 5: Solve for x
    x = 55,629,958.44/7,222.06
  6. Step 6: Final answer
    x = 7,702.78

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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.