Home / 3,220.36-4,443.72-1,803.85

Finding the Fourth Proportional to 3,220.36, 4,443.72 and 1,803.85

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Solution

The fourth proportional to 3,220.36, 4,443.72 and 1,803.85 is: 2,489.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.36 : 4,443.72 = 1,803.85 : x
  2. Step 2: Convert to fraction form
    3,220.36/4,443.72 = 1,803.85/x
  3. Step 3: Cross multiply
    3,220.36x = 4,443.72 × 1,803.85
  4. Step 4: Simplify right side
    3,220.36x = 8,015,782.10
  5. Step 5: Solve for x
    x = 8,015,782.10/3,220.36
  6. Step 6: Final answer
    x = 2,489.10

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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.