Home / 2,178.44-3,006.42-1,393.16

Finding the Fourth Proportional to 2,178.44, 3,006.42 and 1,393.16

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Solution

The fourth proportional to 2,178.44, 3,006.42 and 1,393.16 is: 1,922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.44 : 3,006.42 = 1,393.16 : x
  2. Step 2: Convert to fraction form
    2,178.44/3,006.42 = 1,393.16/x
  3. Step 3: Cross multiply
    2,178.44x = 3,006.42 × 1,393.16
  4. Step 4: Simplify right side
    2,178.44x = 4,188,424.09
  5. Step 5: Solve for x
    x = 4,188,424.09/2,178.44
  6. Step 6: Final answer
    x = 1,922.67

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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.