Home / 2,831.42-4,247.13-1,857.29

Finding the Fourth Proportional to 2,831.42, 4,247.13 and 1,857.29

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Solution

The fourth proportional to 2,831.42, 4,247.13 and 1,857.29 is: 2,785.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.42 : 4,247.13 = 1,857.29 : x
  2. Step 2: Convert to fraction form
    2,831.42/4,247.13 = 1,857.29/x
  3. Step 3: Cross multiply
    2,831.42x = 4,247.13 × 1,857.29
  4. Step 4: Simplify right side
    2,831.42x = 7,888,162.70
  5. Step 5: Solve for x
    x = 7,888,162.70/2,831.42
  6. Step 6: Final answer
    x = 2,785.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.