Home / 5,189.07-7,161.09-2,831.34

Finding the Fourth Proportional to 5,189.07, 7,161.09 and 2,831.34

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Solution

The fourth proportional to 5,189.07, 7,161.09 and 2,831.34 is: 3,907.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.07 : 7,161.09 = 2,831.34 : x
  2. Step 2: Convert to fraction form
    5,189.07/7,161.09 = 2,831.34/x
  3. Step 3: Cross multiply
    5,189.07x = 7,161.09 × 2,831.34
  4. Step 4: Simplify right side
    5,189.07x = 20,275,480.56
  5. Step 5: Solve for x
    x = 20,275,480.56/5,189.07
  6. Step 6: Final answer
    x = 3,907.34

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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.