Home / 7,963.92-11,946.42-2,120.58

Finding the Fourth Proportional to 7,963.92, 11,946.42 and 2,120.58

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Solution

The fourth proportional to 7,963.92, 11,946.42 and 2,120.58 is: 3,181.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.92 : 11,946.42 = 2,120.58 : x
  2. Step 2: Convert to fraction form
    7,963.92/11,946.42 = 2,120.58/x
  3. Step 3: Cross multiply
    7,963.92x = 11,946.42 × 2,120.58
  4. Step 4: Simplify right side
    7,963.92x = 25,333,339.32
  5. Step 5: Solve for x
    x = 25,333,339.32/7,963.92
  6. Step 6: Final answer
    x = 3,181.01

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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.