Home / 2,831.93-4,247.88-1,857.80

Finding the Fourth Proportional to 2,831.93, 4,247.88 and 1,857.80

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Solution

The fourth proportional to 2,831.93, 4,247.88 and 1,857.80 is: 2,786.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.93 : 4,247.88 = 1,857.80 : x
  2. Step 2: Convert to fraction form
    2,831.93/4,247.88 = 1,857.80/x
  3. Step 3: Cross multiply
    2,831.93x = 4,247.88 × 1,857.80
  4. Step 4: Simplify right side
    2,831.93x = 7,891,690.22
  5. Step 5: Solve for x
    x = 7,891,690.22/2,831.93
  6. Step 6: Final answer
    x = 2,786.69

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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.