Home / 3,923.80-5,413.17-2,430.70

Finding the Fourth Proportional to 3,923.80, 5,413.17 and 2,430.70

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Solution

The fourth proportional to 3,923.80, 5,413.17 and 2,430.70 is: 3,353.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.80 : 5,413.17 = 2,430.70 : x
  2. Step 2: Convert to fraction form
    3,923.80/5,413.17 = 2,430.70/x
  3. Step 3: Cross multiply
    3,923.80x = 5,413.17 × 2,430.70
  4. Step 4: Simplify right side
    3,923.80x = 13,157,792.32
  5. Step 5: Solve for x
    x = 13,157,792.32/3,923.80
  6. Step 6: Final answer
    x = 3,353.33

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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.