Home / 7,721.33-11,581.97-3,107.57

Finding the Fourth Proportional to 7,721.33, 11,581.97 and 3,107.57

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Solution

The fourth proportional to 7,721.33, 11,581.97 and 3,107.57 is: 4,661.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.33 : 11,581.97 = 3,107.57 : x
  2. Step 2: Convert to fraction form
    7,721.33/11,581.97 = 3,107.57/x
  3. Step 3: Cross multiply
    7,721.33x = 11,581.97 × 3,107.57
  4. Step 4: Simplify right side
    7,721.33x = 35,991,709.07
  5. Step 5: Solve for x
    x = 35,991,709.07/7,721.33
  6. Step 6: Final answer
    x = 4,661.34

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1.5x scale

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.