Home / 3,981.38-5,494.50-2,409.57

Finding the Fourth Proportional to 3,981.38, 5,494.50 and 2,409.57

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Solution

The fourth proportional to 3,981.38, 5,494.50 and 2,409.57 is: 3,325.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.38 : 5,494.50 = 2,409.57 : x
  2. Step 2: Convert to fraction form
    3,981.38/5,494.50 = 2,409.57/x
  3. Step 3: Cross multiply
    3,981.38x = 5,494.50 × 2,409.57
  4. Step 4: Simplify right side
    3,981.38x = 13,239,382.37
  5. Step 5: Solve for x
    x = 13,239,382.37/3,981.38
  6. Step 6: Final answer
    x = 3,325.33

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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.