Home / 3,905.15-5,390.97-2,413.94

Finding the Fourth Proportional to 3,905.15, 5,390.97 and 2,413.94

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Solution

The fourth proportional to 3,905.15, 5,390.97 and 2,413.94 is: 3,332.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.15 : 5,390.97 = 2,413.94 : x
  2. Step 2: Convert to fraction form
    3,905.15/5,390.97 = 2,413.94/x
  3. Step 3: Cross multiply
    3,905.15x = 5,390.97 × 2,413.94
  4. Step 4: Simplify right side
    3,905.15x = 13,013,478.12
  5. Step 5: Solve for x
    x = 13,013,478.12/3,905.15
  6. Step 6: Final answer
    x = 3,332.39

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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.