Home / 2,780.96-4,173.36-1,413.92

Finding the Fourth Proportional to 2,780.96, 4,173.36 and 1,413.92

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Solution

The fourth proportional to 2,780.96, 4,173.36 and 1,413.92 is: 2,121.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.96 : 4,173.36 = 1,413.92 : x
  2. Step 2: Convert to fraction form
    2,780.96/4,173.36 = 1,413.92/x
  3. Step 3: Cross multiply
    2,780.96x = 4,173.36 × 1,413.92
  4. Step 4: Simplify right side
    2,780.96x = 5,900,797.17
  5. Step 5: Solve for x
    x = 5,900,797.17/2,780.96
  6. Step 6: Final answer
    x = 2,121.86

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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.