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Finding the Fourth Proportional to 6,488.91, 9,731.75 and 2,107.62

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Solution

The fourth proportional to 6,488.91, 9,731.75 and 2,107.62 is: 3,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.91 : 9,731.75 = 2,107.62 : x
  2. Step 2: Convert to fraction form
    6,488.91/9,731.75 = 2,107.62/x
  3. Step 3: Cross multiply
    6,488.91x = 9,731.75 × 2,107.62
  4. Step 4: Simplify right side
    6,488.91x = 20,510,820.40
  5. Step 5: Solve for x
    x = 20,510,820.40/6,488.91
  6. Step 6: Final answer
    x = 3,160.90

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