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Finding the Fourth Proportional to 3,817.80, 5,726.70 and 1,352.70

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Solution

The fourth proportional to 3,817.80, 5,726.70 and 1,352.70 is: 2,029.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,817.80 : 5,726.70 = 1,352.70 : x
  2. Step 2: Convert to fraction form
    3,817.80/5,726.70 = 1,352.70/x
  3. Step 3: Cross multiply
    3,817.80x = 5,726.70 × 1,352.70
  4. Step 4: Simplify right side
    3,817.80x = 7,746,507.09
  5. Step 5: Solve for x
    x = 7,746,507.09/3,817.80
  6. Step 6: Final answer
    x = 2,029.05

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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.