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Finding the Fourth Proportional to 2,043.10, 3,063.86 and 872.36

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Solution

The fourth proportional to 2,043.10, 3,063.86 and 872.36 is: 1,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,043.10 : 3,063.86 = 872.36 : x
  2. Step 2: Convert to fraction form
    2,043.10/3,063.86 = 872.36/x
  3. Step 3: Cross multiply
    2,043.10x = 3,063.86 × 872.36
  4. Step 4: Simplify right side
    2,043.10x = 2,672,788.91
  5. Step 5: Solve for x
    x = 2,672,788.91/2,043.10
  6. Step 6: Final answer
    x = 1,308.20

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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.