Home / 3,687.80-5,529.81-1,222.34

Finding the Fourth Proportional to 3,687.80, 5,529.81 and 1,222.34

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Solution

The fourth proportional to 3,687.80, 5,529.81 and 1,222.34 is: 1,832.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.80 : 5,529.81 = 1,222.34 : x
  2. Step 2: Convert to fraction form
    3,687.80/5,529.81 = 1,222.34/x
  3. Step 3: Cross multiply
    3,687.80x = 5,529.81 × 1,222.34
  4. Step 4: Simplify right side
    3,687.80x = 6,759,307.96
  5. Step 5: Solve for x
    x = 6,759,307.96/3,687.80
  6. Step 6: Final answer
    x = 1,832.88

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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.