Home / 3,611.79-5,418.14-1,145.73

Finding the Fourth Proportional to 3,611.79, 5,418.14 and 1,145.73

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Solution

The fourth proportional to 3,611.79, 5,418.14 and 1,145.73 is: 1,718.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.79 : 5,418.14 = 1,145.73 : x
  2. Step 2: Convert to fraction form
    3,611.79/5,418.14 = 1,145.73/x
  3. Step 3: Cross multiply
    3,611.79x = 5,418.14 × 1,145.73
  4. Step 4: Simplify right side
    3,611.79x = 6,207,716.10
  5. Step 5: Solve for x
    x = 6,207,716.10/3,611.79
  6. Step 6: Final answer
    x = 1,718.74

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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.