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Finding the Fourth Proportional to 3,659.69, 5,489.53 and 1,713.26

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Solution

The fourth proportional to 3,659.69, 5,489.53 and 1,713.26 is: 2,569.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.69 : 5,489.53 = 1,713.26 : x
  2. Step 2: Convert to fraction form
    3,659.69/5,489.53 = 1,713.26/x
  3. Step 3: Cross multiply
    3,659.69x = 5,489.53 × 1,713.26
  4. Step 4: Simplify right side
    3,659.69x = 9,404,964.72
  5. Step 5: Solve for x
    x = 9,404,964.72/3,659.69
  6. Step 6: Final answer
    x = 2,569.88

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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.