Home / 3,219.78-4,445.28-2,472.29

Finding the Fourth Proportional to 3,219.78, 4,445.28 and 2,472.29

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Solution

The fourth proportional to 3,219.78, 4,445.28 and 2,472.29 is: 3,413.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.78 : 4,445.28 = 2,472.29 : x
  2. Step 2: Convert to fraction form
    3,219.78/4,445.28 = 2,472.29/x
  3. Step 3: Cross multiply
    3,219.78x = 4,445.28 × 2,472.29
  4. Step 4: Simplify right side
    3,219.78x = 10,990,015.73
  5. Step 5: Solve for x
    x = 10,990,015.73/3,219.78
  6. Step 6: Final answer
    x = 3,413.28

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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.