Home / 5,189.13-7,160.76-2,831.22

Finding the Fourth Proportional to 5,189.13, 7,160.76 and 2,831.22

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Solution

The fourth proportional to 5,189.13, 7,160.76 and 2,831.22 is: 3,906.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.13 : 7,160.76 = 2,831.22 : x
  2. Step 2: Convert to fraction form
    5,189.13/7,160.76 = 2,831.22/x
  3. Step 3: Cross multiply
    5,189.13x = 7,160.76 × 2,831.22
  4. Step 4: Simplify right side
    5,189.13x = 20,273,686.93
  5. Step 5: Solve for x
    x = 20,273,686.93/5,189.13
  6. Step 6: Final answer
    x = 3,906.95

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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.