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Finding the Fourth Proportional to 2,042.82, 3,062.61 and 810

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Solution

The fourth proportional to 2,042.82, 3,062.61 and 810 is: 1,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,042.82 : 3,062.61 = 810 : x
  2. Step 2: Convert to fraction form
    2,042.82/3,062.61 = 810/x
  3. Step 3: Cross multiply
    2,042.82x = 3,062.61 × 810
  4. Step 4: Simplify right side
    2,042.82x = 2,480,714.10
  5. Step 5: Solve for x
    x = 2,480,714.10/2,042.82
  6. Step 6: Final answer
    x = 1,214.36

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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.