Home / 2,282.05-3,149.21-1,287.32

Finding the Fourth Proportional to 2,282.05, 3,149.21 and 1,287.32

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Solution

The fourth proportional to 2,282.05, 3,149.21 and 1,287.32 is: 1,776.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,282.05 : 3,149.21 = 1,287.32 : x
  2. Step 2: Convert to fraction form
    2,282.05/3,149.21 = 1,287.32/x
  3. Step 3: Cross multiply
    2,282.05x = 3,149.21 × 1,287.32
  4. Step 4: Simplify right side
    2,282.05x = 4,054,028.49
  5. Step 5: Solve for x
    x = 4,054,028.49/2,282.05
  6. Step 6: Final answer
    x = 1,776.49

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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.