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Finding the Fourth Proportional to 6,897.85, 9,518.76 and 3,913.62

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Solution

The fourth proportional to 6,897.85, 9,518.76 and 3,913.62 is: 5,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,897.85 : 9,518.76 = 3,913.62 : x
  2. Step 2: Convert to fraction form
    6,897.85/9,518.76 = 3,913.62/x
  3. Step 3: Cross multiply
    6,897.85x = 9,518.76 × 3,913.62
  4. Step 4: Simplify right side
    6,897.85x = 37,252,818.92
  5. Step 5: Solve for x
    x = 37,252,818.92/6,897.85
  6. Step 6: Final answer
    x = 5,400.64

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