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Finding the Fourth Proportional to 3,290.83, 4,931.79 and 1,648.55

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Solution

The fourth proportional to 3,290.83, 4,931.79 and 1,648.55 is: 2,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.83 : 4,931.79 = 1,648.55 : x
  2. Step 2: Convert to fraction form
    3,290.83/4,931.79 = 1,648.55/x
  3. Step 3: Cross multiply
    3,290.83x = 4,931.79 × 1,648.55
  4. Step 4: Simplify right side
    3,290.83x = 8,130,308.55
  5. Step 5: Solve for x
    x = 8,130,308.55/3,290.83
  6. Step 6: Final answer
    x = 2,470.60

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