Home / 2,212.20-3,313.98-1,438.92

Finding the Fourth Proportional to 2,212.20, 3,313.98 and 1,438.92

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Solution

The fourth proportional to 2,212.20, 3,313.98 and 1,438.92 is: 2,155.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.20 : 3,313.98 = 1,438.92 : x
  2. Step 2: Convert to fraction form
    2,212.20/3,313.98 = 1,438.92/x
  3. Step 3: Cross multiply
    2,212.20x = 3,313.98 × 1,438.92
  4. Step 4: Simplify right side
    2,212.20x = 4,768,552.10
  5. Step 5: Solve for x
    x = 4,768,552.10/2,212.20
  6. Step 6: Final answer
    x = 2,155.57

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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.