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Finding the Fourth Proportional to 5,154.73, 7,729.53 and 1,644.28

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Solution

The fourth proportional to 5,154.73, 7,729.53 and 1,644.28 is: 2,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,154.73 : 7,729.53 = 1,644.28 : x
  2. Step 2: Convert to fraction form
    5,154.73/7,729.53 = 1,644.28/x
  3. Step 3: Cross multiply
    5,154.73x = 7,729.53 × 1,644.28
  4. Step 4: Simplify right side
    5,154.73x = 12,709,511.59
  5. Step 5: Solve for x
    x = 12,709,511.59/5,154.73
  6. Step 6: Final answer
    x = 2,465.60

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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.