Home / 3,239.80-4,467.99-2,120.38

Finding the Fourth Proportional to 3,239.80, 4,467.99 and 2,120.38

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Solution

The fourth proportional to 3,239.80, 4,467.99 and 2,120.38 is: 2,924.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.80 : 4,467.99 = 2,120.38 : x
  2. Step 2: Convert to fraction form
    3,239.80/4,467.99 = 2,120.38/x
  3. Step 3: Cross multiply
    3,239.80x = 4,467.99 × 2,120.38
  4. Step 4: Simplify right side
    3,239.80x = 9,473,836.64
  5. Step 5: Solve for x
    x = 9,473,836.64/3,239.80
  6. Step 6: Final answer
    x = 2,924.20

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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.