Home / 7,947.78-11,922.75-2,754.06

Finding the Fourth Proportional to 7,947.78, 11,922.75 and 2,754.06

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Solution

The fourth proportional to 7,947.78, 11,922.75 and 2,754.06 is: 4,131.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947.78 : 11,922.75 = 2,754.06 : x
  2. Step 2: Convert to fraction form
    7,947.78/11,922.75 = 2,754.06/x
  3. Step 3: Cross multiply
    7,947.78x = 11,922.75 × 2,754.06
  4. Step 4: Simplify right side
    7,947.78x = 32,835,968.87
  5. Step 5: Solve for x
    x = 32,835,968.87/7,947.78
  6. Step 6: Final answer
    x = 4,131.46

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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.