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Finding the Third Proportional to 7,309 and 10,690.50

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Solution

The third proportional to 7,309 and 10,690.50 is: 15,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,309 : 10,690.50 = 10,690.50 : x
  2. Step 2: Convert to fraction form
    7,309/10,690.50 = 10,690.50/x
  3. Step 3: Cross multiply
    7,309x = 10,690.50 × 10,690.50
  4. Step 4: Simplify right side
    7,309x = 114,286,790.25
  5. Step 5: Solve for x
    x = 114,286,790.25/7,309
  6. Step 6: Final answer
    x = 15,636.45

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.