Home / 2,831.85-4,247.10-1,188.41

Finding the Fourth Proportional to 2,831.85, 4,247.10 and 1,188.41

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Solution

The fourth proportional to 2,831.85, 4,247.10 and 1,188.41 is: 1,782.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.85 : 4,247.10 = 1,188.41 : x
  2. Step 2: Convert to fraction form
    2,831.85/4,247.10 = 1,188.41/x
  3. Step 3: Cross multiply
    2,831.85x = 4,247.10 × 1,188.41
  4. Step 4: Simplify right side
    2,831.85x = 5,047,274.88
  5. Step 5: Solve for x
    x = 5,047,274.88/2,831.85
  6. Step 6: Final answer
    x = 1,782.32

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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.