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Finding the Third Proportional to 1,817 and 4,290.50

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Solution

The third proportional to 1,817 and 4,290.50 is: 10,131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817 : 4,290.50 = 4,290.50 : x
  2. Step 2: Convert to fraction form
    1,817/4,290.50 = 4,290.50/x
  3. Step 3: Cross multiply
    1,817x = 4,290.50 × 4,290.50
  4. Step 4: Simplify right side
    1,817x = 18,408,390.25
  5. Step 5: Solve for x
    x = 18,408,390.25/1,817
  6. Step 6: Final answer
    x = 10,131.20

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.