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Finding the Fourth Proportional to 3,680.45, 5,512.58 and 3,392.37

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Solution

The fourth proportional to 3,680.45, 5,512.58 and 3,392.37 is: 5,081.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.45 : 5,512.58 = 3,392.37 : x
  2. Step 2: Convert to fraction form
    3,680.45/5,512.58 = 3,392.37/x
  3. Step 3: Cross multiply
    3,680.45x = 5,512.58 × 3,392.37
  4. Step 4: Simplify right side
    3,680.45x = 18,700,719.50
  5. Step 5: Solve for x
    x = 18,700,719.50/3,680.45
  6. Step 6: Final answer
    x = 5,081.10

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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.