Home / 2,831.50-3,906.30-1,874.62

Finding the Fourth Proportional to 2,831.50, 3,906.30 and 1,874.62

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Solution

The fourth proportional to 2,831.50, 3,906.30 and 1,874.62 is: 2,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.50 : 3,906.30 = 1,874.62 : x
  2. Step 2: Convert to fraction form
    2,831.50/3,906.30 = 1,874.62/x
  3. Step 3: Cross multiply
    2,831.50x = 3,906.30 × 1,874.62
  4. Step 4: Simplify right side
    2,831.50x = 7,322,828.11
  5. Step 5: Solve for x
    x = 7,322,828.11/2,831.50
  6. Step 6: Final answer
    x = 2,586.20

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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.