Home / 3,219.30-4,443.39-2,225.70

Finding the Fourth Proportional to 3,219.30, 4,443.39 and 2,225.70

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Solution

The fourth proportional to 3,219.30, 4,443.39 and 2,225.70 is: 3,071.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.30 : 4,443.39 = 2,225.70 : x
  2. Step 2: Convert to fraction form
    3,219.30/4,443.39 = 2,225.70/x
  3. Step 3: Cross multiply
    3,219.30x = 4,443.39 × 2,225.70
  4. Step 4: Simplify right side
    3,219.30x = 9,889,653.12
  5. Step 5: Solve for x
    x = 9,889,653.12/3,219.30
  6. Step 6: Final answer
    x = 3,071.99

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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.