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Finding the Fourth Proportional to 3,611.54, 5,409.10 and 2,826.65

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Solution

The fourth proportional to 3,611.54, 5,409.10 and 2,826.65 is: 4,233.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.54 : 5,409.10 = 2,826.65 : x
  2. Step 2: Convert to fraction form
    3,611.54/5,409.10 = 2,826.65/x
  3. Step 3: Cross multiply
    3,611.54x = 5,409.10 × 2,826.65
  4. Step 4: Simplify right side
    3,611.54x = 15,289,632.52
  5. Step 5: Solve for x
    x = 15,289,632.52/3,611.54
  6. Step 6: Final answer
    x = 4,233.55

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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.