Home / 7,963.96-11,946.06-2,121.40

Finding the Fourth Proportional to 7,963.96, 11,946.06 and 2,121.40

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Solution

The fourth proportional to 7,963.96, 11,946.06 and 2,121.40 is: 3,182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.96 : 11,946.06 = 2,121.40 : x
  2. Step 2: Convert to fraction form
    7,963.96/11,946.06 = 2,121.40/x
  3. Step 3: Cross multiply
    7,963.96x = 11,946.06 × 2,121.40
  4. Step 4: Simplify right side
    7,963.96x = 25,342,371.68
  5. Step 5: Solve for x
    x = 25,342,371.68/7,963.96
  6. Step 6: Final answer
    x = 3,182.13

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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.