Home / 7,413.36-11,076.56-7,155

Finding the Fourth Proportional to 7,413.36, 11,076.56 and 7,155

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Solution

The fourth proportional to 7,413.36, 11,076.56 and 7,155 is: 10,690.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,413.36 : 11,076.56 = 7,155 : x
  2. Step 2: Convert to fraction form
    7,413.36/11,076.56 = 7,155/x
  3. Step 3: Cross multiply
    7,413.36x = 11,076.56 × 7,155
  4. Step 4: Simplify right side
    7,413.36x = 79,252,786.80
  5. Step 5: Solve for x
    x = 79,252,786.80/7,413.36
  6. Step 6: Final answer
    x = 10,690.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.