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Finding the Fourth Proportional to 4,611.25, 6,919.71 and 2,421.55

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Solution

The fourth proportional to 4,611.25, 6,919.71 and 2,421.55 is: 3,633.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,611.25 : 6,919.71 = 2,421.55 : x
  2. Step 2: Convert to fraction form
    4,611.25/6,919.71 = 2,421.55/x
  3. Step 3: Cross multiply
    4,611.25x = 6,919.71 × 2,421.55
  4. Step 4: Simplify right side
    4,611.25x = 16,756,423.75
  5. Step 5: Solve for x
    x = 16,756,423.75/4,611.25
  6. Step 6: Final answer
    x = 3,633.81

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