Home / 2,831.76-4,247.84-1,271.04

Finding the Fourth Proportional to 2,831.76, 4,247.84 and 1,271.04

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Solution

The fourth proportional to 2,831.76, 4,247.84 and 1,271.04 is: 1,906.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.76 : 4,247.84 = 1,271.04 : x
  2. Step 2: Convert to fraction form
    2,831.76/4,247.84 = 1,271.04/x
  3. Step 3: Cross multiply
    2,831.76x = 4,247.84 × 1,271.04
  4. Step 4: Simplify right side
    2,831.76x = 5,399,174.55
  5. Step 5: Solve for x
    x = 5,399,174.55/2,831.76
  6. Step 6: Final answer
    x = 1,906.65

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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.