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Finding the Fourth Proportional to 3,630.84, 5,010.36 and 2,138.42

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Solution

The fourth proportional to 3,630.84, 5,010.36 and 2,138.42 is: 2,950.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.84 : 5,010.36 = 2,138.42 : x
  2. Step 2: Convert to fraction form
    3,630.84/5,010.36 = 2,138.42/x
  3. Step 3: Cross multiply
    3,630.84x = 5,010.36 × 2,138.42
  4. Step 4: Simplify right side
    3,630.84x = 10,714,228.98
  5. Step 5: Solve for x
    x = 10,714,228.98/3,630.84
  6. Step 6: Final answer
    x = 2,950.90

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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.