Home / 2,615.13-3,922.56-667.22

Finding the Fourth Proportional to 2,615.13, 3,922.56 and 667.22

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Solution

The fourth proportional to 2,615.13, 3,922.56 and 667.22 is: 1,000.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.13 : 3,922.56 = 667.22 : x
  2. Step 2: Convert to fraction form
    2,615.13/3,922.56 = 667.22/x
  3. Step 3: Cross multiply
    2,615.13x = 3,922.56 × 667.22
  4. Step 4: Simplify right side
    2,615.13x = 2,617,190.87
  5. Step 5: Solve for x
    x = 2,617,190.87/2,615.13
  6. Step 6: Final answer
    x = 1,000.79

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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.