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Finding the Fourth Proportional to 3,539.98, 5,310.06 and 1,979.11

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Solution

The fourth proportional to 3,539.98, 5,310.06 and 1,979.11 is: 2,968.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.98 : 5,310.06 = 1,979.11 : x
  2. Step 2: Convert to fraction form
    3,539.98/5,310.06 = 1,979.11/x
  3. Step 3: Cross multiply
    3,539.98x = 5,310.06 × 1,979.11
  4. Step 4: Simplify right side
    3,539.98x = 10,509,156.40
  5. Step 5: Solve for x
    x = 10,509,156.40/3,539.98
  6. Step 6: Final answer
    x = 2,968.71

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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.