Home / 3,986.71-5,979.88-1,646.08

Finding the Fourth Proportional to 3,986.71, 5,979.88 and 1,646.08

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Solution

The fourth proportional to 3,986.71, 5,979.88 and 1,646.08 is: 2,469.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.71 : 5,979.88 = 1,646.08 : x
  2. Step 2: Convert to fraction form
    3,986.71/5,979.88 = 1,646.08/x
  3. Step 3: Cross multiply
    3,986.71x = 5,979.88 × 1,646.08
  4. Step 4: Simplify right side
    3,986.71x = 9,843,360.87
  5. Step 5: Solve for x
    x = 9,843,360.87/3,986.71
  6. Step 6: Final answer
    x = 2,469.04

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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.