Home / 3,209.85-4,424.49-2,160.09

Finding the Fourth Proportional to 3,209.85, 4,424.49 and 2,160.09

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Solution

The fourth proportional to 3,209.85, 4,424.49 and 2,160.09 is: 2,977.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.85 : 4,424.49 = 2,160.09 : x
  2. Step 2: Convert to fraction form
    3,209.85/4,424.49 = 2,160.09/x
  3. Step 3: Cross multiply
    3,209.85x = 4,424.49 × 2,160.09
  4. Step 4: Simplify right side
    3,209.85x = 9,557,296.60
  5. Step 5: Solve for x
    x = 9,557,296.60/3,209.85
  6. Step 6: Final answer
    x = 2,977.49

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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.