Home / 3,678.66-5,516.55-1,338.21

Finding the Fourth Proportional to 3,678.66, 5,516.55 and 1,338.21

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Solution

The fourth proportional to 3,678.66, 5,516.55 and 1,338.21 is: 2,006.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.66 : 5,516.55 = 1,338.21 : x
  2. Step 2: Convert to fraction form
    3,678.66/5,516.55 = 1,338.21/x
  3. Step 3: Cross multiply
    3,678.66x = 5,516.55 × 1,338.21
  4. Step 4: Simplify right side
    3,678.66x = 7,382,302.38
  5. Step 5: Solve for x
    x = 7,382,302.38/3,678.66
  6. Step 6: Final answer
    x = 2,006.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.