Home / 2,209.63-3,297.62-2,120.31

Finding the Fourth Proportional to 2,209.63, 3,297.62 and 2,120.31

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Solution

The fourth proportional to 2,209.63, 3,297.62 and 2,120.31 is: 3,164.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.63 : 3,297.62 = 2,120.31 : x
  2. Step 2: Convert to fraction form
    2,209.63/3,297.62 = 2,120.31/x
  3. Step 3: Cross multiply
    2,209.63x = 3,297.62 × 2,120.31
  4. Step 4: Simplify right side
    2,209.63x = 6,991,976.66
  5. Step 5: Solve for x
    x = 6,991,976.66/2,209.63
  6. Step 6: Final answer
    x = 3,164.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.