Home / 3,178.73-4,387.44-2,118.27

Finding the Fourth Proportional to 3,178.73, 4,387.44 and 2,118.27

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Solution

The fourth proportional to 3,178.73, 4,387.44 and 2,118.27 is: 2,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.73 : 4,387.44 = 2,118.27 : x
  2. Step 2: Convert to fraction form
    3,178.73/4,387.44 = 2,118.27/x
  3. Step 3: Cross multiply
    3,178.73x = 4,387.44 × 2,118.27
  4. Step 4: Simplify right side
    3,178.73x = 9,293,782.53
  5. Step 5: Solve for x
    x = 9,293,782.53/3,178.73
  6. Step 6: Final answer
    x = 2,923.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.