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Finding the Fourth Proportional to 2,894.70, 3,996.21 and 2,230.09

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Solution

The fourth proportional to 2,894.70, 3,996.21 and 2,230.09 is: 3,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,894.70 : 3,996.21 = 2,230.09 : x
  2. Step 2: Convert to fraction form
    2,894.70/3,996.21 = 2,230.09/x
  3. Step 3: Cross multiply
    2,894.70x = 3,996.21 × 2,230.09
  4. Step 4: Simplify right side
    2,894.70x = 8,911,907.96
  5. Step 5: Solve for x
    x = 8,911,907.96/2,894.70
  6. Step 6: Final answer
    x = 3,078.70

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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.