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Finding the Fourth Proportional to 3,663.50, 5,495.26 and 1,611.50

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Solution

The fourth proportional to 3,663.50, 5,495.26 and 1,611.50 is: 2,417.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,663.50 : 5,495.26 = 1,611.50 : x
  2. Step 2: Convert to fraction form
    3,663.50/5,495.26 = 1,611.50/x
  3. Step 3: Cross multiply
    3,663.50x = 5,495.26 × 1,611.50
  4. Step 4: Simplify right side
    3,663.50x = 8,855,611.49
  5. Step 5: Solve for x
    x = 8,855,611.49/3,663.50
  6. Step 6: Final answer
    x = 2,417.25

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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.