Home / 3,219.80-4,443.69-1,803.87

Finding the Fourth Proportional to 3,219.80, 4,443.69 and 1,803.87

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Solution

The fourth proportional to 3,219.80, 4,443.69 and 1,803.87 is: 2,489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.80 : 4,443.69 = 1,803.87 : x
  2. Step 2: Convert to fraction form
    3,219.80/4,443.69 = 1,803.87/x
  3. Step 3: Cross multiply
    3,219.80x = 4,443.69 × 1,803.87
  4. Step 4: Simplify right side
    3,219.80x = 8,015,845.84
  5. Step 5: Solve for x
    x = 8,015,845.84/3,219.80
  6. Step 6: Final answer
    x = 2,489.55

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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.