Home / 3,918.36-5,409.16-2,974.62

Finding the Fourth Proportional to 3,918.36, 5,409.16 and 2,974.62

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Solution

The fourth proportional to 3,918.36, 5,409.16 and 2,974.62 is: 4,106.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.36 : 5,409.16 = 2,974.62 : x
  2. Step 2: Convert to fraction form
    3,918.36/5,409.16 = 2,974.62/x
  3. Step 3: Cross multiply
    3,918.36x = 5,409.16 × 2,974.62
  4. Step 4: Simplify right side
    3,918.36x = 16,090,195.52
  5. Step 5: Solve for x
    x = 16,090,195.52/3,918.36
  6. Step 6: Final answer
    x = 4,106.36

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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.