Home / 3,718.68-5,578.56-1,121.84

Finding the Fourth Proportional to 3,718.68, 5,578.56 and 1,121.84

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Solution

The fourth proportional to 3,718.68, 5,578.56 and 1,121.84 is: 1,682.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.68 : 5,578.56 = 1,121.84 : x
  2. Step 2: Convert to fraction form
    3,718.68/5,578.56 = 1,121.84/x
  3. Step 3: Cross multiply
    3,718.68x = 5,578.56 × 1,121.84
  4. Step 4: Simplify right side
    3,718.68x = 6,258,251.75
  5. Step 5: Solve for x
    x = 6,258,251.75/3,718.68
  6. Step 6: Final answer
    x = 1,682.92

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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.