Home / 3,916.38-5,406.40-2,516.70

Finding the Fourth Proportional to 3,916.38, 5,406.40 and 2,516.70

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Solution

The fourth proportional to 3,916.38, 5,406.40 and 2,516.70 is: 3,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.38 : 5,406.40 = 2,516.70 : x
  2. Step 2: Convert to fraction form
    3,916.38/5,406.40 = 2,516.70/x
  3. Step 3: Cross multiply
    3,916.38x = 5,406.40 × 2,516.70
  4. Step 4: Simplify right side
    3,916.38x = 13,606,286.88
  5. Step 5: Solve for x
    x = 13,606,286.88/3,916.38
  6. Step 6: Final answer
    x = 3,474.20

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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.