Home / 3,212.44-4,815.12-2,101.40

Finding the Fourth Proportional to 3,212.44, 4,815.12 and 2,101.40

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Solution

The fourth proportional to 3,212.44, 4,815.12 and 2,101.40 is: 3,149.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.44 : 4,815.12 = 2,101.40 : x
  2. Step 2: Convert to fraction form
    3,212.44/4,815.12 = 2,101.40/x
  3. Step 3: Cross multiply
    3,212.44x = 4,815.12 × 2,101.40
  4. Step 4: Simplify right side
    3,212.44x = 10,118,495.03
  5. Step 5: Solve for x
    x = 10,118,495.03/3,212.44
  6. Step 6: Final answer
    x = 3,149.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.