Home / 3,215.35-4,824.84-2,120.23

Finding the Fourth Proportional to 3,215.35, 4,824.84 and 2,120.23

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Solution

The fourth proportional to 3,215.35, 4,824.84 and 2,120.23 is: 3,181.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.35 : 4,824.84 = 2,120.23 : x
  2. Step 2: Convert to fraction form
    3,215.35/4,824.84 = 2,120.23/x
  3. Step 3: Cross multiply
    3,215.35x = 4,824.84 × 2,120.23
  4. Step 4: Simplify right side
    3,215.35x = 10,229,746.39
  5. Step 5: Solve for x
    x = 10,229,746.39/3,215.35
  6. Step 6: Final answer
    x = 3,181.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.