Home / 3,678.19-5,076.12-2,106.25

Finding the Fourth Proportional to 3,678.19, 5,076.12 and 2,106.25

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Solution

The fourth proportional to 3,678.19, 5,076.12 and 2,106.25 is: 2,906.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.19 : 5,076.12 = 2,106.25 : x
  2. Step 2: Convert to fraction form
    3,678.19/5,076.12 = 2,106.25/x
  3. Step 3: Cross multiply
    3,678.19x = 5,076.12 × 2,106.25
  4. Step 4: Simplify right side
    3,678.19x = 10,691,577.75
  5. Step 5: Solve for x
    x = 10,691,577.75/3,678.19
  6. Step 6: Final answer
    x = 2,906.75

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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.