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Finding the Fourth Proportional to 6,421, 8,860.98 and 3,477

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Solution

The fourth proportional to 6,421, 8,860.98 and 3,477 is: 4,798.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421 : 8,860.98 = 3,477 : x
  2. Step 2: Convert to fraction form
    6,421/8,860.98 = 3,477/x
  3. Step 3: Cross multiply
    6,421x = 8,860.98 × 3,477
  4. Step 4: Simplify right side
    6,421x = 30,809,627.46
  5. Step 5: Solve for x
    x = 30,809,627.46/6,421
  6. Step 6: Final answer
    x = 4,798.26

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