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Finding the Fourth Proportional to 8,987.46, 13,481.19 and 2,831.46

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Solution

The fourth proportional to 8,987.46, 13,481.19 and 2,831.46 is: 4,247.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.46 : 13,481.19 = 2,831.46 : x
  2. Step 2: Convert to fraction form
    8,987.46/13,481.19 = 2,831.46/x
  3. Step 3: Cross multiply
    8,987.46x = 13,481.19 × 2,831.46
  4. Step 4: Simplify right side
    8,987.46x = 38,171,450.24
  5. Step 5: Solve for x
    x = 38,171,450.24/8,987.46
  6. Step 6: Final answer
    x = 4,247.19

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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.