Home / 7,815.51-10,786.79-4,413.55

Finding the Fourth Proportional to 7,815.51, 10,786.79 and 4,413.55

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Solution

The fourth proportional to 7,815.51, 10,786.79 and 4,413.55 is: 6,091.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.51 : 10,786.79 = 4,413.55 : x
  2. Step 2: Convert to fraction form
    7,815.51/10,786.79 = 4,413.55/x
  3. Step 3: Cross multiply
    7,815.51x = 10,786.79 × 4,413.55
  4. Step 4: Simplify right side
    7,815.51x = 47,608,037.00
  5. Step 5: Solve for x
    x = 47,608,037.00/7,815.51
  6. Step 6: Final answer
    x = 6,091.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.