Home / 7,831.14-11,743.80-3,149.58

Finding the Fourth Proportional to 7,831.14, 11,743.80 and 3,149.58

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Solution

The fourth proportional to 7,831.14, 11,743.80 and 3,149.58 is: 4,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.14 : 11,743.80 = 3,149.58 : x
  2. Step 2: Convert to fraction form
    7,831.14/11,743.80 = 3,149.58/x
  3. Step 3: Cross multiply
    7,831.14x = 11,743.80 × 3,149.58
  4. Step 4: Simplify right side
    7,831.14x = 36,988,037.60
  5. Step 5: Solve for x
    x = 36,988,037.60/7,831.14
  6. Step 6: Final answer
    x = 4,723.20

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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.