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Finding the Fourth Proportional to 4,479.21, 6,719.93 and 1,557.54

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Solution

The fourth proportional to 4,479.21, 6,719.93 and 1,557.54 is: 2,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.21 : 6,719.93 = 1,557.54 : x
  2. Step 2: Convert to fraction form
    4,479.21/6,719.93 = 1,557.54/x
  3. Step 3: Cross multiply
    4,479.21x = 6,719.93 × 1,557.54
  4. Step 4: Simplify right side
    4,479.21x = 10,466,557.83
  5. Step 5: Solve for x
    x = 10,466,557.83/4,479.21
  6. Step 6: Final answer
    x = 2,336.70

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