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Finding the Fourth Proportional to 3,945.32, 5,915.10 and 1,890.92

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Solution

The fourth proportional to 3,945.32, 5,915.10 and 1,890.92 is: 2,835.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.32 : 5,915.10 = 1,890.92 : x
  2. Step 2: Convert to fraction form
    3,945.32/5,915.10 = 1,890.92/x
  3. Step 3: Cross multiply
    3,945.32x = 5,915.10 × 1,890.92
  4. Step 4: Simplify right side
    3,945.32x = 11,184,980.89
  5. Step 5: Solve for x
    x = 11,184,980.89/3,945.32
  6. Step 6: Final answer
    x = 2,835.00

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