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Finding the Fourth Proportional to 6,989.76, 9,645.62 and 3,845.88

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Solution

The fourth proportional to 6,989.76, 9,645.62 and 3,845.88 is: 5,307.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.76 : 9,645.62 = 3,845.88 : x
  2. Step 2: Convert to fraction form
    6,989.76/9,645.62 = 3,845.88/x
  3. Step 3: Cross multiply
    6,989.76x = 9,645.62 × 3,845.88
  4. Step 4: Simplify right side
    6,989.76x = 37,095,877.82
  5. Step 5: Solve for x
    x = 37,095,877.82/6,989.76
  6. Step 6: Final answer
    x = 5,307.17

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