Home / 7,831.60-11,743.56-3,878.28

Finding the Fourth Proportional to 7,831.60, 11,743.56 and 3,878.28

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Solution

The fourth proportional to 7,831.60, 11,743.56 and 3,878.28 is: 5,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.60 : 11,743.56 = 3,878.28 : x
  2. Step 2: Convert to fraction form
    7,831.60/11,743.56 = 3,878.28/x
  3. Step 3: Cross multiply
    7,831.60x = 11,743.56 × 3,878.28
  4. Step 4: Simplify right side
    7,831.60x = 45,544,813.88
  5. Step 5: Solve for x
    x = 45,544,813.88/7,831.60
  6. Step 6: Final answer
    x = 5,815.52

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.