Home / 3,219.68-4,445.12-3,021.12

Finding the Fourth Proportional to 3,219.68, 4,445.12 and 3,021.12

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Solution

The fourth proportional to 3,219.68, 4,445.12 and 3,021.12 is: 4,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.68 : 4,445.12 = 3,021.12 : x
  2. Step 2: Convert to fraction form
    3,219.68/4,445.12 = 3,021.12/x
  3. Step 3: Cross multiply
    3,219.68x = 4,445.12 × 3,021.12
  4. Step 4: Simplify right side
    3,219.68x = 13,429,240.93
  5. Step 5: Solve for x
    x = 13,429,240.93/3,219.68
  6. Step 6: Final answer
    x = 4,170.99

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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.