Home / 8,786.78-13,178.79-2,943.44

Finding the Fourth Proportional to 8,786.78, 13,178.79 and 2,943.44

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Solution

The fourth proportional to 8,786.78, 13,178.79 and 2,943.44 is: 4,414.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.78 : 13,178.79 = 2,943.44 : x
  2. Step 2: Convert to fraction form
    8,786.78/13,178.79 = 2,943.44/x
  3. Step 3: Cross multiply
    8,786.78x = 13,178.79 × 2,943.44
  4. Step 4: Simplify right side
    8,786.78x = 38,790,911.74
  5. Step 5: Solve for x
    x = 38,790,911.74/8,786.78
  6. Step 6: Final answer
    x = 4,414.69

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1.5x scale

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.