Home / 7,946.52-11,919.78-2,103.99

Finding the Fourth Proportional to 7,946.52, 11,919.78 and 2,103.99

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Solution

The fourth proportional to 7,946.52, 11,919.78 and 2,103.99 is: 3,155.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,946.52 : 11,919.78 = 2,103.99 : x
  2. Step 2: Convert to fraction form
    7,946.52/11,919.78 = 2,103.99/x
  3. Step 3: Cross multiply
    7,946.52x = 11,919.78 × 2,103.99
  4. Step 4: Simplify right side
    7,946.52x = 25,079,097.92
  5. Step 5: Solve for x
    x = 25,079,097.92/7,946.52
  6. Step 6: Final answer
    x = 3,155.99

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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.