Home / 3,612.12-5,413.43-1,855.61

Finding the Fourth Proportional to 3,612.12, 5,413.43 and 1,855.61

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Solution

The fourth proportional to 3,612.12, 5,413.43 and 1,855.61 is: 2,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.12 : 5,413.43 = 1,855.61 : x
  2. Step 2: Convert to fraction form
    3,612.12/5,413.43 = 1,855.61/x
  3. Step 3: Cross multiply
    3,612.12x = 5,413.43 × 1,855.61
  4. Step 4: Simplify right side
    3,612.12x = 10,045,212.71
  5. Step 5: Solve for x
    x = 10,045,212.71/3,612.12
  6. Step 6: Final answer
    x = 2,780.97

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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.