Home / 3,917.79-5,413.70-2,853.71

Finding the Fourth Proportional to 3,917.79, 5,413.70 and 2,853.71

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Solution

The fourth proportional to 3,917.79, 5,413.70 and 2,853.71 is: 3,943.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.79 : 5,413.70 = 2,853.71 : x
  2. Step 2: Convert to fraction form
    3,917.79/5,413.70 = 2,853.71/x
  3. Step 3: Cross multiply
    3,917.79x = 5,413.70 × 2,853.71
  4. Step 4: Simplify right side
    3,917.79x = 15,449,088.49
  5. Step 5: Solve for x
    x = 15,449,088.49/3,917.79
  6. Step 6: Final answer
    x = 3,943.32

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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.