Home / 3,916.68-5,391.54-3,418.53

Finding the Fourth Proportional to 3,916.68, 5,391.54 and 3,418.53

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Solution

The fourth proportional to 3,916.68, 5,391.54 and 3,418.53 is: 4,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.68 : 5,391.54 = 3,418.53 : x
  2. Step 2: Convert to fraction form
    3,916.68/5,391.54 = 3,418.53/x
  3. Step 3: Cross multiply
    3,916.68x = 5,391.54 × 3,418.53
  4. Step 4: Simplify right side
    3,916.68x = 18,431,141.24
  5. Step 5: Solve for x
    x = 18,431,141.24/3,916.68
  6. Step 6: Final answer
    x = 4,705.81

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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.