Home / 3,916.23-5,399.40-2,855.54

Finding the Fourth Proportional to 3,916.23, 5,399.40 and 2,855.54

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Solution

The fourth proportional to 3,916.23, 5,399.40 and 2,855.54 is: 3,936.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.23 : 5,399.40 = 2,855.54 : x
  2. Step 2: Convert to fraction form
    3,916.23/5,399.40 = 2,855.54/x
  3. Step 3: Cross multiply
    3,916.23x = 5,399.40 × 2,855.54
  4. Step 4: Simplify right side
    3,916.23x = 15,418,175.68
  5. Step 5: Solve for x
    x = 15,418,175.68/3,916.23
  6. Step 6: Final answer
    x = 3,936.99

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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.