Home / 3,970.36-5,477.82-2,398.84

Finding the Fourth Proportional to 3,970.36, 5,477.82 and 2,398.84

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Solution

The fourth proportional to 3,970.36, 5,477.82 and 2,398.84 is: 3,309.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.36 : 5,477.82 = 2,398.84 : x
  2. Step 2: Convert to fraction form
    3,970.36/5,477.82 = 2,398.84/x
  3. Step 3: Cross multiply
    3,970.36x = 5,477.82 × 2,398.84
  4. Step 4: Simplify right side
    3,970.36x = 13,140,413.73
  5. Step 5: Solve for x
    x = 13,140,413.73/3,970.36
  6. Step 6: Final answer
    x = 3,309.63

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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.