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Finding the Fourth Proportional to 3,687.75, 5,530.95 and 1,222.29

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Solution

The fourth proportional to 3,687.75, 5,530.95 and 1,222.29 is: 1,833.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.75 : 5,530.95 = 1,222.29 : x
  2. Step 2: Convert to fraction form
    3,687.75/5,530.95 = 1,222.29/x
  3. Step 3: Cross multiply
    3,687.75x = 5,530.95 × 1,222.29
  4. Step 4: Simplify right side
    3,687.75x = 6,760,424.88
  5. Step 5: Solve for x
    x = 6,760,424.88/3,687.75
  6. Step 6: Final answer
    x = 1,833.21

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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.