Home / 2,831.75-3,908.19-1,589.75

Finding the Fourth Proportional to 2,831.75, 3,908.19 and 1,589.75

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Solution

The fourth proportional to 2,831.75, 3,908.19 and 1,589.75 is: 2,194.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.75 : 3,908.19 = 1,589.75 : x
  2. Step 2: Convert to fraction form
    2,831.75/3,908.19 = 1,589.75/x
  3. Step 3: Cross multiply
    2,831.75x = 3,908.19 × 1,589.75
  4. Step 4: Simplify right side
    2,831.75x = 6,213,045.05
  5. Step 5: Solve for x
    x = 6,213,045.05/2,831.75
  6. Step 6: Final answer
    x = 2,194.07

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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.