Home / 3,980.58-5,493.62-2,212.18

Finding the Fourth Proportional to 3,980.58, 5,493.62 and 2,212.18

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Solution

The fourth proportional to 3,980.58, 5,493.62 and 2,212.18 is: 3,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.58 : 5,493.62 = 2,212.18 : x
  2. Step 2: Convert to fraction form
    3,980.58/5,493.62 = 2,212.18/x
  3. Step 3: Cross multiply
    3,980.58x = 5,493.62 × 2,212.18
  4. Step 4: Simplify right side
    3,980.58x = 12,152,898.99
  5. Step 5: Solve for x
    x = 12,152,898.99/3,980.58
  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.