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Finding the Fourth Proportional to 3,247.78, 4,875.85 and 2,788.51

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Solution

The fourth proportional to 3,247.78, 4,875.85 and 2,788.51 is: 4,186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.78 : 4,875.85 = 2,788.51 : x
  2. Step 2: Convert to fraction form
    3,247.78/4,875.85 = 2,788.51/x
  3. Step 3: Cross multiply
    3,247.78x = 4,875.85 × 2,788.51
  4. Step 4: Simplify right side
    3,247.78x = 13,596,356.48
  5. Step 5: Solve for x
    x = 13,596,356.48/3,247.78
  6. Step 6: Final answer
    x = 4,186.35

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