Home / 5,222.78-7,831.72-1,935.80

Finding the Fourth Proportional to 5,222.78, 7,831.72 and 1,935.80

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Solution

The fourth proportional to 5,222.78, 7,831.72 and 1,935.80 is: 2,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,222.78 : 7,831.72 = 1,935.80 : x
  2. Step 2: Convert to fraction form
    5,222.78/7,831.72 = 1,935.80/x
  3. Step 3: Cross multiply
    5,222.78x = 7,831.72 × 1,935.80
  4. Step 4: Simplify right side
    5,222.78x = 15,160,643.58
  5. Step 5: Solve for x
    x = 15,160,643.58/5,222.78
  6. Step 6: Final answer
    x = 2,902.79

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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.