Home / 3,980.73-5,493.64-2,212.32

Finding the Fourth Proportional to 3,980.73, 5,493.64 and 2,212.32

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Solution

The fourth proportional to 3,980.73, 5,493.64 and 2,212.32 is: 3,053.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.73 : 5,493.64 = 2,212.32 : x
  2. Step 2: Convert to fraction form
    3,980.73/5,493.64 = 2,212.32/x
  3. Step 3: Cross multiply
    3,980.73x = 5,493.64 × 2,212.32
  4. Step 4: Simplify right side
    3,980.73x = 12,153,689.64
  5. Step 5: Solve for x
    x = 12,153,689.64/3,980.73
  6. Step 6: Final answer
    x = 3,053.13

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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.