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Finding the Fourth Proportional to 3,620.00, 5,430.67 and 1,645.76

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Solution

The fourth proportional to 3,620.00, 5,430.67 and 1,645.76 is: 2,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.00 : 5,430.67 = 1,645.76 : x
  2. Step 2: Convert to fraction form
    3,620.00/5,430.67 = 1,645.76/x
  3. Step 3: Cross multiply
    3,620.00x = 5,430.67 × 1,645.76
  4. Step 4: Simplify right side
    3,620.00x = 8,937,588.92
  5. Step 5: Solve for x
    x = 8,937,588.92/3,620.00
  6. Step 6: Final answer
    x = 2,468.95

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