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Finding the Fourth Proportional to 3,661.80, 5,053.29 and 1,983.22

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Solution

The fourth proportional to 3,661.80, 5,053.29 and 1,983.22 is: 2,736.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.80 : 5,053.29 = 1,983.22 : x
  2. Step 2: Convert to fraction form
    3,661.80/5,053.29 = 1,983.22/x
  3. Step 3: Cross multiply
    3,661.80x = 5,053.29 × 1,983.22
  4. Step 4: Simplify right side
    3,661.80x = 10,021,785.79
  5. Step 5: Solve for x
    x = 10,021,785.79/3,661.80
  6. Step 6: Final answer
    x = 2,736.85

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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.