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Finding the Fourth Proportional to 3,616.92, 4,985.40 and 2,421.49

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Solution

The fourth proportional to 3,616.92, 4,985.40 and 2,421.49 is: 3,337.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,616.92 : 4,985.40 = 2,421.49 : x
  2. Step 2: Convert to fraction form
    3,616.92/4,985.40 = 2,421.49/x
  3. Step 3: Cross multiply
    3,616.92x = 4,985.40 × 2,421.49
  4. Step 4: Simplify right side
    3,616.92x = 12,072,096.25
  5. Step 5: Solve for x
    x = 12,072,096.25/3,616.92
  6. Step 6: Final answer
    x = 3,337.67

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