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Finding the Fourth Proportional to 4,056.75, 6,085.13 and 978.75

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Solution

The fourth proportional to 4,056.75, 6,085.13 and 978.75 is: 1,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,056.75 : 6,085.13 = 978.75 : x
  2. Step 2: Convert to fraction form
    4,056.75/6,085.13 = 978.75/x
  3. Step 3: Cross multiply
    4,056.75x = 6,085.13 × 978.75
  4. Step 4: Simplify right side
    4,056.75x = 5,955,816.09
  5. Step 5: Solve for x
    x = 5,955,816.09/4,056.75
  6. Step 6: Final answer
    x = 1,468.13

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