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Finding the Fourth Proportional to 2,884.88, 3,981.32 and 1,642.88

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Solution

The fourth proportional to 2,884.88, 3,981.32 and 1,642.88 is: 2,267.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,884.88 : 3,981.32 = 1,642.88 : x
  2. Step 2: Convert to fraction form
    2,884.88/3,981.32 = 1,642.88/x
  3. Step 3: Cross multiply
    2,884.88x = 3,981.32 × 1,642.88
  4. Step 4: Simplify right side
    2,884.88x = 6,540,802.88
  5. Step 5: Solve for x
    x = 6,540,802.88/2,884.88
  6. Step 6: Final answer
    x = 2,267.27

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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.