Home / 3,137.10-4,329.62-2,021.21

Finding the Fourth Proportional to 3,137.10, 4,329.62 and 2,021.21

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Solution

The fourth proportional to 3,137.10, 4,329.62 and 2,021.21 is: 2,789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.10 : 4,329.62 = 2,021.21 : x
  2. Step 2: Convert to fraction form
    3,137.10/4,329.62 = 2,021.21/x
  3. Step 3: Cross multiply
    3,137.10x = 4,329.62 × 2,021.21
  4. Step 4: Simplify right side
    3,137.10x = 8,751,071.24
  5. Step 5: Solve for x
    x = 8,751,071.24/3,137.10
  6. Step 6: Final answer
    x = 2,789.54

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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.