Home / 2,831.51-3,906.41-2,087.25

Finding the Fourth Proportional to 2,831.51, 3,906.41 and 2,087.25

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Solution

The fourth proportional to 2,831.51, 3,906.41 and 2,087.25 is: 2,879.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.51 : 3,906.41 = 2,087.25 : x
  2. Step 2: Convert to fraction form
    2,831.51/3,906.41 = 2,087.25/x
  3. Step 3: Cross multiply
    2,831.51x = 3,906.41 × 2,087.25
  4. Step 4: Simplify right side
    2,831.51x = 8,153,643.84
  5. Step 5: Solve for x
    x = 8,153,643.84/2,831.51
  6. Step 6: Final answer
    x = 2,879.61

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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.