Home / 2,660.80-3,986.40-1,633.60

Finding the Fourth Proportional to 2,660.80, 3,986.40 and 1,633.60

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Solution

The fourth proportional to 2,660.80, 3,986.40 and 1,633.60 is: 2,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.80 : 3,986.40 = 1,633.60 : x
  2. Step 2: Convert to fraction form
    2,660.80/3,986.40 = 1,633.60/x
  3. Step 3: Cross multiply
    2,660.80x = 3,986.40 × 1,633.60
  4. Step 4: Simplify right side
    2,660.80x = 6,512,183.04
  5. Step 5: Solve for x
    x = 6,512,183.04/2,660.80
  6. Step 6: Final answer
    x = 2,447.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.