Home / 2,986.65-4,120.62-1,660.10

Finding the Fourth Proportional to 2,986.65, 4,120.62 and 1,660.10

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Solution

The fourth proportional to 2,986.65, 4,120.62 and 1,660.10 is: 2,290.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.65 : 4,120.62 = 1,660.10 : x
  2. Step 2: Convert to fraction form
    2,986.65/4,120.62 = 1,660.10/x
  3. Step 3: Cross multiply
    2,986.65x = 4,120.62 × 1,660.10
  4. Step 4: Simplify right side
    2,986.65x = 6,840,651.56
  5. Step 5: Solve for x
    x = 6,840,651.56/2,986.65
  6. Step 6: Final answer
    x = 2,290.41

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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.