Home / 3,940.61-5,905.35-2,186.39

Finding the Fourth Proportional to 3,940.61, 5,905.35 and 2,186.39

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Solution

The fourth proportional to 3,940.61, 5,905.35 and 2,186.39 is: 3,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.61 : 5,905.35 = 2,186.39 : x
  2. Step 2: Convert to fraction form
    3,940.61/5,905.35 = 2,186.39/x
  3. Step 3: Cross multiply
    3,940.61x = 5,905.35 × 2,186.39
  4. Step 4: Simplify right side
    3,940.61x = 12,911,398.19
  5. Step 5: Solve for x
    x = 12,911,398.19/3,940.61
  6. Step 6: Final answer
    x = 3,276.50

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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.