Home / 2,313.62-3,469.90-669.80

Finding the Fourth Proportional to 2,313.62, 3,469.90 and 669.80

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Solution

The fourth proportional to 2,313.62, 3,469.90 and 669.80 is: 1,004.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.62 : 3,469.90 = 669.80 : x
  2. Step 2: Convert to fraction form
    2,313.62/3,469.90 = 669.80/x
  3. Step 3: Cross multiply
    2,313.62x = 3,469.90 × 669.80
  4. Step 4: Simplify right side
    2,313.62x = 2,324,139.02
  5. Step 5: Solve for x
    x = 2,324,139.02/2,313.62
  6. Step 6: Final answer
    x = 1,004.55

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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.