Home / 3,220.10-4,443.68-1,803.88

Finding the Fourth Proportional to 3,220.10, 4,443.68 and 1,803.88

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Solution

The fourth proportional to 3,220.10, 4,443.68 and 1,803.88 is: 2,489.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.10 : 4,443.68 = 1,803.88 : x
  2. Step 2: Convert to fraction form
    3,220.10/4,443.68 = 1,803.88/x
  3. Step 3: Cross multiply
    3,220.10x = 4,443.68 × 1,803.88
  4. Step 4: Simplify right side
    3,220.10x = 8,015,858.88
  5. Step 5: Solve for x
    x = 8,015,858.88/3,220.10
  6. Step 6: Final answer
    x = 2,489.32

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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.