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Finding the Fourth Proportional to 2,821.03, 3,893.07 and 1,642.08

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Solution

The fourth proportional to 2,821.03, 3,893.07 and 1,642.08 is: 2,266.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.03 : 3,893.07 = 1,642.08 : x
  2. Step 2: Convert to fraction form
    2,821.03/3,893.07 = 1,642.08/x
  3. Step 3: Cross multiply
    2,821.03x = 3,893.07 × 1,642.08
  4. Step 4: Simplify right side
    2,821.03x = 6,392,732.39
  5. Step 5: Solve for x
    x = 6,392,732.39/2,821.03
  6. Step 6: Final answer
    x = 2,266.10

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1.5x scale

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.