Home / 3,980.67-5,493.56-2,212.26

Finding the Fourth Proportional to 3,980.67, 5,493.56 and 2,212.26

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Solution

The fourth proportional to 3,980.67, 5,493.56 and 2,212.26 is: 3,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.67 : 5,493.56 = 2,212.26 : x
  2. Step 2: Convert to fraction form
    3,980.67/5,493.56 = 2,212.26/x
  3. Step 3: Cross multiply
    3,980.67x = 5,493.56 × 2,212.26
  4. Step 4: Simplify right side
    3,980.67x = 12,153,171.98
  5. Step 5: Solve for x
    x = 12,153,171.98/3,980.67
  6. Step 6: Final answer
    x = 3,053.05

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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.