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Finding the Fourth Proportional to 3,698, 5,539.72 and 2,774.60

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Solution

The fourth proportional to 3,698, 5,539.72 and 2,774.60 is: 4,156.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,698 : 5,539.72 = 2,774.60 : x
  2. Step 2: Convert to fraction form
    3,698/5,539.72 = 2,774.60/x
  3. Step 3: Cross multiply
    3,698x = 5,539.72 × 2,774.60
  4. Step 4: Simplify right side
    3,698x = 15,370,507.11
  5. Step 5: Solve for x
    x = 15,370,507.11/3,698
  6. Step 6: Final answer
    x = 4,156.44

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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.