Home / 9,413.78-12,991.23-5,222.30

Finding the Fourth Proportional to 9,413.78, 12,991.23 and 5,222.30

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Solution

The fourth proportional to 9,413.78, 12,991.23 and 5,222.30 is: 7,206.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,413.78 : 12,991.23 = 5,222.30 : x
  2. Step 2: Convert to fraction form
    9,413.78/12,991.23 = 5,222.30/x
  3. Step 3: Cross multiply
    9,413.78x = 12,991.23 × 5,222.30
  4. Step 4: Simplify right side
    9,413.78x = 67,844,100.43
  5. Step 5: Solve for x
    x = 67,844,100.43/9,413.78
  6. Step 6: Final answer
    x = 7,206.89

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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.