Home / 3,678.66-5,076.41-2,106.45

Finding the Fourth Proportional to 3,678.66, 5,076.41 and 2,106.45

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Solution

The fourth proportional to 3,678.66, 5,076.41 and 2,106.45 is: 2,906.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.66 : 5,076.41 = 2,106.45 : x
  2. Step 2: Convert to fraction form
    3,678.66/5,076.41 = 2,106.45/x
  3. Step 3: Cross multiply
    3,678.66x = 5,076.41 × 2,106.45
  4. Step 4: Simplify right side
    3,678.66x = 10,693,193.31
  5. Step 5: Solve for x
    x = 10,693,193.31/3,678.66
  6. Step 6: Final answer
    x = 2,906.82

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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.