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Finding the Fourth Proportional to 3,636.85, 5,018.85 and 2,144.77

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Solution

The fourth proportional to 3,636.85, 5,018.85 and 2,144.77 is: 2,959.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636.85 : 5,018.85 = 2,144.77 : x
  2. Step 2: Convert to fraction form
    3,636.85/5,018.85 = 2,144.77/x
  3. Step 3: Cross multiply
    3,636.85x = 5,018.85 × 2,144.77
  4. Step 4: Simplify right side
    3,636.85x = 10,764,278.91
  5. Step 5: Solve for x
    x = 10,764,278.91/3,636.85
  6. Step 6: Final answer
    x = 2,959.78

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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.