Home / 3,873.37-5,806.78-1,680.45

Finding the Fourth Proportional to 3,873.37, 5,806.78 and 1,680.45

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Solution

The fourth proportional to 3,873.37, 5,806.78 and 1,680.45 is: 2,519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.37 : 5,806.78 = 1,680.45 : x
  2. Step 2: Convert to fraction form
    3,873.37/5,806.78 = 1,680.45/x
  3. Step 3: Cross multiply
    3,873.37x = 5,806.78 × 1,680.45
  4. Step 4: Simplify right side
    3,873.37x = 9,757,974.42
  5. Step 5: Solve for x
    x = 9,757,974.42/3,873.37
  6. Step 6: Final answer
    x = 2,519.25

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1.5x scale

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.