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Finding the Fourth Proportional to 3,661.40, 5,493.90 and 1,713.26

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Solution

The fourth proportional to 3,661.40, 5,493.90 and 1,713.26 is: 2,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.40 : 5,493.90 = 1,713.26 : x
  2. Step 2: Convert to fraction form
    3,661.40/5,493.90 = 1,713.26/x
  3. Step 3: Cross multiply
    3,661.40x = 5,493.90 × 1,713.26
  4. Step 4: Simplify right side
    3,661.40x = 9,412,479.11
  5. Step 5: Solve for x
    x = 9,412,479.11/3,661.40
  6. Step 6: Final answer
    x = 2,570.73

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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.