Home / 7,721.06-11,580.82-2,174.28

Finding the Fourth Proportional to 7,721.06, 11,580.82 and 2,174.28

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Solution

The fourth proportional to 7,721.06, 11,580.82 and 2,174.28 is: 3,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.06 : 11,580.82 = 2,174.28 : x
  2. Step 2: Convert to fraction form
    7,721.06/11,580.82 = 2,174.28/x
  3. Step 3: Cross multiply
    7,721.06x = 11,580.82 × 2,174.28
  4. Step 4: Simplify right side
    7,721.06x = 25,179,945.31
  5. Step 5: Solve for x
    x = 25,179,945.31/7,721.06
  6. Step 6: Final answer
    x = 3,261.20

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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.