Home / 2,986.35-4,120.66-1,660.02

Finding the Fourth Proportional to 2,986.35, 4,120.66 and 1,660.02

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Solution

The fourth proportional to 2,986.35, 4,120.66 and 1,660.02 is: 2,290.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.35 : 4,120.66 = 1,660.02 : x
  2. Step 2: Convert to fraction form
    2,986.35/4,120.66 = 1,660.02/x
  3. Step 3: Cross multiply
    2,986.35x = 4,120.66 × 1,660.02
  4. Step 4: Simplify right side
    2,986.35x = 6,840,378.01
  5. Step 5: Solve for x
    x = 6,840,378.01/2,986.35
  6. Step 6: Final answer
    x = 2,290.55

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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.