Home / 3,219.78-4,443.25-1,803.52

Finding the Fourth Proportional to 3,219.78, 4,443.25 and 1,803.52

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Solution

The fourth proportional to 3,219.78, 4,443.25 and 1,803.52 is: 2,488.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.78 : 4,443.25 = 1,803.52 : x
  2. Step 2: Convert to fraction form
    3,219.78/4,443.25 = 1,803.52/x
  3. Step 3: Cross multiply
    3,219.78x = 4,443.25 × 1,803.52
  4. Step 4: Simplify right side
    3,219.78x = 8,013,481.39
  5. Step 5: Solve for x
    x = 8,013,481.39/3,219.78
  6. Step 6: Final answer
    x = 2,488.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.