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Finding the Fourth Proportional to 6,656, 9,978.36 and 4,458

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Solution

The fourth proportional to 6,656, 9,978.36 and 4,458 is: 6,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,656 : 9,978.36 = 4,458 : x
  2. Step 2: Convert to fraction form
    6,656/9,978.36 = 4,458/x
  3. Step 3: Cross multiply
    6,656x = 9,978.36 × 4,458
  4. Step 4: Simplify right side
    6,656x = 44,483,528.88
  5. Step 5: Solve for x
    x = 44,483,528.88/6,656
  6. Step 6: Final answer
    x = 6,683.22

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