Home / 3,190.80-4,787.40-1,548.78

Finding the Fourth Proportional to 3,190.80, 4,787.40 and 1,548.78

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Solution

The fourth proportional to 3,190.80, 4,787.40 and 1,548.78 is: 2,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.80 : 4,787.40 = 1,548.78 : x
  2. Step 2: Convert to fraction form
    3,190.80/4,787.40 = 1,548.78/x
  3. Step 3: Cross multiply
    3,190.80x = 4,787.40 × 1,548.78
  4. Step 4: Simplify right side
    3,190.80x = 7,414,629.37
  5. Step 5: Solve for x
    x = 7,414,629.37/3,190.80
  6. Step 6: Final answer
    x = 2,323.75

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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.