Home / 3,686.45-5,529.81-1,221.49

Finding the Fourth Proportional to 3,686.45, 5,529.81 and 1,221.49

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Solution

The fourth proportional to 3,686.45, 5,529.81 and 1,221.49 is: 1,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.45 : 5,529.81 = 1,221.49 : x
  2. Step 2: Convert to fraction form
    3,686.45/5,529.81 = 1,221.49/x
  3. Step 3: Cross multiply
    3,686.45x = 5,529.81 × 1,221.49
  4. Step 4: Simplify right side
    3,686.45x = 6,754,579.97
  5. Step 5: Solve for x
    x = 6,754,579.97/3,686.45
  6. Step 6: Final answer
    x = 1,832.27

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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.