Home / 3,219.30-4,442.04-2,720.88

Finding the Fourth Proportional to 3,219.30, 4,442.04 and 2,720.88

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Solution

The fourth proportional to 3,219.30, 4,442.04 and 2,720.88 is: 3,754.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.30 : 4,442.04 = 2,720.88 : x
  2. Step 2: Convert to fraction form
    3,219.30/4,442.04 = 2,720.88/x
  3. Step 3: Cross multiply
    3,219.30x = 4,442.04 × 2,720.88
  4. Step 4: Simplify right side
    3,219.30x = 12,086,257.80
  5. Step 5: Solve for x
    x = 12,086,257.80/3,219.30
  6. Step 6: Final answer
    x = 3,754.31

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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.