Home / 2,228.19-3,342.76-668.32

Finding the Fourth Proportional to 2,228.19, 3,342.76 and 668.32

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Solution

The fourth proportional to 2,228.19, 3,342.76 and 668.32 is: 1,002.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.19 : 3,342.76 = 668.32 : x
  2. Step 2: Convert to fraction form
    2,228.19/3,342.76 = 668.32/x
  3. Step 3: Cross multiply
    2,228.19x = 3,342.76 × 668.32
  4. Step 4: Simplify right side
    2,228.19x = 2,234,033.36
  5. Step 5: Solve for x
    x = 2,234,033.36/2,228.19
  6. Step 6: Final answer
    x = 1,002.62

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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.