Home / 7,811.82-11,720.43-4,886.64

Finding the Fourth Proportional to 7,811.82, 11,720.43 and 4,886.64

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Solution

The fourth proportional to 7,811.82, 11,720.43 and 4,886.64 is: 7,331.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.82 : 11,720.43 = 4,886.64 : x
  2. Step 2: Convert to fraction form
    7,811.82/11,720.43 = 4,886.64/x
  3. Step 3: Cross multiply
    7,811.82x = 11,720.43 × 4,886.64
  4. Step 4: Simplify right side
    7,811.82x = 57,273,522.06
  5. Step 5: Solve for x
    x = 57,273,522.06/7,811.82
  6. Step 6: Final answer
    x = 7,331.65

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