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Finding the Fourth Proportional to 2,642, 3,647.48 and 2,022.16

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Solution

The fourth proportional to 2,642, 3,647.48 and 2,022.16 is: 2,791.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642 : 3,647.48 = 2,022.16 : x
  2. Step 2: Convert to fraction form
    2,642/3,647.48 = 2,022.16/x
  3. Step 3: Cross multiply
    2,642x = 3,647.48 × 2,022.16
  4. Step 4: Simplify right side
    2,642x = 7,375,788.16
  5. Step 5: Solve for x
    x = 7,375,788.16/2,642
  6. Step 6: Final answer
    x = 2,791.74

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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.