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Finding the Third Proportional to 3,190 and 4,691.50

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Solution

The third proportional to 3,190 and 4,691.50 is: 6,899.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190 : 4,691.50 = 4,691.50 : x
  2. Step 2: Convert to fraction form
    3,190/4,691.50 = 4,691.50/x
  3. Step 3: Cross multiply
    3,190x = 4,691.50 × 4,691.50
  4. Step 4: Simplify right side
    3,190x = 22,010,172.25
  5. Step 5: Solve for x
    x = 22,010,172.25/3,190
  6. Step 6: Final answer
    x = 6,899.74

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.