Home / 3,668.30-5,062.24-1,989.70

Finding the Fourth Proportional to 3,668.30, 5,062.24 and 1,989.70

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Solution

The fourth proportional to 3,668.30, 5,062.24 and 1,989.70 is: 2,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,668.30 : 5,062.24 = 1,989.70 : x
  2. Step 2: Convert to fraction form
    3,668.30/5,062.24 = 1,989.70/x
  3. Step 3: Cross multiply
    3,668.30x = 5,062.24 × 1,989.70
  4. Step 4: Simplify right side
    3,668.30x = 10,072,338.93
  5. Step 5: Solve for x
    x = 10,072,338.93/3,668.30
  6. Step 6: Final answer
    x = 2,745.78

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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.