Home / 2,831.63-4,247.44-1,188.20

Finding the Fourth Proportional to 2,831.63, 4,247.44 and 1,188.20

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Solution

The fourth proportional to 2,831.63, 4,247.44 and 1,188.20 is: 1,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.63 : 4,247.44 = 1,188.20 : x
  2. Step 2: Convert to fraction form
    2,831.63/4,247.44 = 1,188.20/x
  3. Step 3: Cross multiply
    2,831.63x = 4,247.44 × 1,188.20
  4. Step 4: Simplify right side
    2,831.63x = 5,046,815.86
  5. Step 5: Solve for x
    x = 5,046,815.86/2,831.63
  6. Step 6: Final answer
    x = 1,782.30

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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.