Home / 3,413.85-5,120.77-948.69

Finding the Fourth Proportional to 3,413.85, 5,120.77 and 948.69

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Solution

The fourth proportional to 3,413.85, 5,120.77 and 948.69 is: 1,423.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.85 : 5,120.77 = 948.69 : x
  2. Step 2: Convert to fraction form
    3,413.85/5,120.77 = 948.69/x
  3. Step 3: Cross multiply
    3,413.85x = 5,120.77 × 948.69
  4. Step 4: Simplify right side
    3,413.85x = 4,857,997.69
  5. Step 5: Solve for x
    x = 4,857,997.69/3,413.85
  6. Step 6: Final answer
    x = 1,423.03

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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.