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Finding the Fourth Proportional to 3,557.62, 4,909.71 and 1,985.68

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Solution

The fourth proportional to 3,557.62, 4,909.71 and 1,985.68 is: 2,740.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.62 : 4,909.71 = 1,985.68 : x
  2. Step 2: Convert to fraction form
    3,557.62/4,909.71 = 1,985.68/x
  3. Step 3: Cross multiply
    3,557.62x = 4,909.71 × 1,985.68
  4. Step 4: Simplify right side
    3,557.62x = 9,749,112.95
  5. Step 5: Solve for x
    x = 9,749,112.95/3,557.62
  6. Step 6: Final answer
    x = 2,740.35

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