Home / 8,418.78-12,628.56-3,224.28

Finding the Fourth Proportional to 8,418.78, 12,628.56 and 3,224.28

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Solution

The fourth proportional to 8,418.78, 12,628.56 and 3,224.28 is: 4,836.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.78 : 12,628.56 = 3,224.28 : x
  2. Step 2: Convert to fraction form
    8,418.78/12,628.56 = 3,224.28/x
  3. Step 3: Cross multiply
    8,418.78x = 12,628.56 × 3,224.28
  4. Step 4: Simplify right side
    8,418.78x = 40,718,013.44
  5. Step 5: Solve for x
    x = 40,718,013.44/8,418.78
  6. Step 6: Final answer
    x = 4,836.57

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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.