Home / 2,831.48-3,906.37-2,087.22

Finding the Fourth Proportional to 2,831.48, 3,906.37 and 2,087.22

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Solution

The fourth proportional to 2,831.48, 3,906.37 and 2,087.22 is: 2,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.48 : 3,906.37 = 2,087.22 : x
  2. Step 2: Convert to fraction form
    2,831.48/3,906.37 = 2,087.22/x
  3. Step 3: Cross multiply
    2,831.48x = 3,906.37 × 2,087.22
  4. Step 4: Simplify right side
    2,831.48x = 8,153,453.59
  5. Step 5: Solve for x
    x = 8,153,453.59/2,831.48
  6. Step 6: Final answer
    x = 2,879.57

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1.5x scale

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.