Home / 3,980.62-5,493.45-2,212.19

Finding the Fourth Proportional to 3,980.62, 5,493.45 and 2,212.19

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Solution

The fourth proportional to 3,980.62, 5,493.45 and 2,212.19 is: 3,052.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.62 : 5,493.45 = 2,212.19 : x
  2. Step 2: Convert to fraction form
    3,980.62/5,493.45 = 2,212.19/x
  3. Step 3: Cross multiply
    3,980.62x = 5,493.45 × 2,212.19
  4. Step 4: Simplify right side
    3,980.62x = 12,152,555.16
  5. Step 5: Solve for x
    x = 12,152,555.16/3,980.62
  6. Step 6: Final answer
    x = 3,052.93

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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.