Home / 3,678.68-5,076.60-2,107.70

Finding the Fourth Proportional to 3,678.68, 5,076.60 and 2,107.70

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Solution

The fourth proportional to 3,678.68, 5,076.60 and 2,107.70 is: 2,908.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.68 : 5,076.60 = 2,107.70 : x
  2. Step 2: Convert to fraction form
    3,678.68/5,076.60 = 2,107.70/x
  3. Step 3: Cross multiply
    3,678.68x = 5,076.60 × 2,107.70
  4. Step 4: Simplify right side
    3,678.68x = 10,699,949.82
  5. Step 5: Solve for x
    x = 10,699,949.82/3,678.68
  6. Step 6: Final answer
    x = 2,908.64

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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.