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Finding the Fourth Proportional to 3,403.98, 5,107.23 and 1,759.50

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Solution

The fourth proportional to 3,403.98, 5,107.23 and 1,759.50 is: 2,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.98 : 5,107.23 = 1,759.50 : x
  2. Step 2: Convert to fraction form
    3,403.98/5,107.23 = 1,759.50/x
  3. Step 3: Cross multiply
    3,403.98x = 5,107.23 × 1,759.50
  4. Step 4: Simplify right side
    3,403.98x = 8,986,171.19
  5. Step 5: Solve for x
    x = 8,986,171.19/3,403.98
  6. Step 6: Final answer
    x = 2,639.90

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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.