Home / 3,679.10-5,516.90-1,338.80

Finding the Fourth Proportional to 3,679.10, 5,516.90 and 1,338.80

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Solution

The fourth proportional to 3,679.10, 5,516.90 and 1,338.80 is: 2,007.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.10 : 5,516.90 = 1,338.80 : x
  2. Step 2: Convert to fraction form
    3,679.10/5,516.90 = 1,338.80/x
  3. Step 3: Cross multiply
    3,679.10x = 5,516.90 × 1,338.80
  4. Step 4: Simplify right side
    3,679.10x = 7,386,025.72
  5. Step 5: Solve for x
    x = 7,386,025.72/3,679.10
  6. Step 6: Final answer
    x = 2,007.56

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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.