Home / 3,837.14-5,751-1,987.20

Finding the Fourth Proportional to 3,837.14, 5,751 and 1,987.20

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Solution

The fourth proportional to 3,837.14, 5,751 and 1,987.20 is: 2,978.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,837.14 : 5,751 = 1,987.20 : x
  2. Step 2: Convert to fraction form
    3,837.14/5,751 = 1,987.20/x
  3. Step 3: Cross multiply
    3,837.14x = 5,751 × 1,987.20
  4. Step 4: Simplify right side
    3,837.14x = 11,428,387.20
  5. Step 5: Solve for x
    x = 11,428,387.20/3,837.14
  6. Step 6: Final answer
    x = 2,978.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.