Home / 2,879.30-3,974.10-1,831.16

Finding the Fourth Proportional to 2,879.30, 3,974.10 and 1,831.16

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Solution

The fourth proportional to 2,879.30, 3,974.10 and 1,831.16 is: 2,527.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.30 : 3,974.10 = 1,831.16 : x
  2. Step 2: Convert to fraction form
    2,879.30/3,974.10 = 1,831.16/x
  3. Step 3: Cross multiply
    2,879.30x = 3,974.10 × 1,831.16
  4. Step 4: Simplify right side
    2,879.30x = 7,277,212.96
  5. Step 5: Solve for x
    x = 7,277,212.96/2,879.30
  6. Step 6: Final answer
    x = 2,527.42

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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.