Home / 2,986.87-4,121.58-1,660.43

Finding the Fourth Proportional to 2,986.87, 4,121.58 and 1,660.43

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Solution

The fourth proportional to 2,986.87, 4,121.58 and 1,660.43 is: 2,291.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.87 : 4,121.58 = 1,660.43 : x
  2. Step 2: Convert to fraction form
    2,986.87/4,121.58 = 1,660.43/x
  3. Step 3: Cross multiply
    2,986.87x = 4,121.58 × 1,660.43
  4. Step 4: Simplify right side
    2,986.87x = 6,843,595.08
  5. Step 5: Solve for x
    x = 6,843,595.08/2,986.87
  6. Step 6: Final answer
    x = 2,291.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.