Home / 2,986.20-4,469.58-2,109.24

Finding the Fourth Proportional to 2,986.20, 4,469.58 and 2,109.24

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Solution

The fourth proportional to 2,986.20, 4,469.58 and 2,109.24 is: 3,156.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.20 : 4,469.58 = 2,109.24 : x
  2. Step 2: Convert to fraction form
    2,986.20/4,469.58 = 2,109.24/x
  3. Step 3: Cross multiply
    2,986.20x = 4,469.58 × 2,109.24
  4. Step 4: Simplify right side
    2,986.20x = 9,427,416.92
  5. Step 5: Solve for x
    x = 9,427,416.92/2,986.20
  6. Step 6: Final answer
    x = 3,156.99

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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.