Home / 3,644.12-5,028.66-1,988.12

Finding the Fourth Proportional to 3,644.12, 5,028.66 and 1,988.12

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Solution

The fourth proportional to 3,644.12, 5,028.66 and 1,988.12 is: 2,743.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,644.12 : 5,028.66 = 1,988.12 : x
  2. Step 2: Convert to fraction form
    3,644.12/5,028.66 = 1,988.12/x
  3. Step 3: Cross multiply
    3,644.12x = 5,028.66 × 1,988.12
  4. Step 4: Simplify right side
    3,644.12x = 9,997,579.52
  5. Step 5: Solve for x
    x = 9,997,579.52/3,644.12
  6. Step 6: Final answer
    x = 2,743.48

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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.