Home / 3,980.92-5,493.63-2,212.49

Finding the Fourth Proportional to 3,980.92, 5,493.63 and 2,212.49

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Solution

The fourth proportional to 3,980.92, 5,493.63 and 2,212.49 is: 3,053.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.92 : 5,493.63 = 2,212.49 : x
  2. Step 2: Convert to fraction form
    3,980.92/5,493.63 = 2,212.49/x
  3. Step 3: Cross multiply
    3,980.92x = 5,493.63 × 2,212.49
  4. Step 4: Simplify right side
    3,980.92x = 12,154,601.44
  5. Step 5: Solve for x
    x = 12,154,601.44/3,980.92
  6. Step 6: Final answer
    x = 3,053.21

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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.