Home / 2,831.08-3,906.74-1,572.12

Finding the Fourth Proportional to 2,831.08, 3,906.74 and 1,572.12

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Solution

The fourth proportional to 2,831.08, 3,906.74 and 1,572.12 is: 2,169.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.08 : 3,906.74 = 1,572.12 : x
  2. Step 2: Convert to fraction form
    2,831.08/3,906.74 = 1,572.12/x
  3. Step 3: Cross multiply
    2,831.08x = 3,906.74 × 1,572.12
  4. Step 4: Simplify right side
    2,831.08x = 6,141,864.09
  5. Step 5: Solve for x
    x = 6,141,864.09/2,831.08
  6. Step 6: Final answer
    x = 2,169.44

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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.