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Finding the Fourth Proportional to 2,611.64, 3,604.02 and 1,728.07

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Solution

The fourth proportional to 2,611.64, 3,604.02 and 1,728.07 is: 2,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.64 : 3,604.02 = 1,728.07 : x
  2. Step 2: Convert to fraction form
    2,611.64/3,604.02 = 1,728.07/x
  3. Step 3: Cross multiply
    2,611.64x = 3,604.02 × 1,728.07
  4. Step 4: Simplify right side
    2,611.64x = 6,227,998.84
  5. Step 5: Solve for x
    x = 6,227,998.84/2,611.64
  6. Step 6: Final answer
    x = 2,384.71

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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.