Home / 5,189.37-7,161.33-2,831.49

Finding the Fourth Proportional to 5,189.37, 7,161.33 and 2,831.49

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Solution

The fourth proportional to 5,189.37, 7,161.33 and 2,831.49 is: 3,907.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.37 : 7,161.33 = 2,831.49 : x
  2. Step 2: Convert to fraction form
    5,189.37/7,161.33 = 2,831.49/x
  3. Step 3: Cross multiply
    5,189.37x = 7,161.33 × 2,831.49
  4. Step 4: Simplify right side
    5,189.37x = 20,277,234.28
  5. Step 5: Solve for x
    x = 20,277,234.28/5,189.37
  6. Step 6: Final answer
    x = 3,907.46

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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.