Home / 2,986.91-4,122.06-2,102.99

Finding the Fourth Proportional to 2,986.91, 4,122.06 and 2,102.99

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Solution

The fourth proportional to 2,986.91, 4,122.06 and 2,102.99 is: 2,902.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.91 : 4,122.06 = 2,102.99 : x
  2. Step 2: Convert to fraction form
    2,986.91/4,122.06 = 2,102.99/x
  3. Step 3: Cross multiply
    2,986.91x = 4,122.06 × 2,102.99
  4. Step 4: Simplify right side
    2,986.91x = 8,668,650.96
  5. Step 5: Solve for x
    x = 8,668,650.96/2,986.91
  6. Step 6: Final answer
    x = 2,902.21

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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.