Home / 3,947.80-5,919.63-1,174.09

Finding the Fourth Proportional to 3,947.80, 5,919.63 and 1,174.09

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Solution

The fourth proportional to 3,947.80, 5,919.63 and 1,174.09 is: 1,760.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.80 : 5,919.63 = 1,174.09 : x
  2. Step 2: Convert to fraction form
    3,947.80/5,919.63 = 1,174.09/x
  3. Step 3: Cross multiply
    3,947.80x = 5,919.63 × 1,174.09
  4. Step 4: Simplify right side
    3,947.80x = 6,950,178.39
  5. Step 5: Solve for x
    x = 6,950,178.39/3,947.80
  6. Step 6: Final answer
    x = 1,760.52

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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.