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Finding the Fourth Proportional to 3,685.58, 5,086.05 and 2,007

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Solution

The fourth proportional to 3,685.58, 5,086.05 and 2,007 is: 2,769.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.58 : 5,086.05 = 2,007 : x
  2. Step 2: Convert to fraction form
    3,685.58/5,086.05 = 2,007/x
  3. Step 3: Cross multiply
    3,685.58x = 5,086.05 × 2,007
  4. Step 4: Simplify right side
    3,685.58x = 10,207,702.35
  5. Step 5: Solve for x
    x = 10,207,702.35/3,685.58
  6. Step 6: Final answer
    x = 2,769.63

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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.