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Finding the Third Proportional to 7,990.88 and 10,148.63

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Solution

The third proportional to 7,990.88 and 10,148.63 is: 12,889.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.88 : 10,148.63 = 10,148.63 : x
  2. Step 2: Convert to fraction form
    7,990.88/10,148.63 = 10,148.63/x
  3. Step 3: Cross multiply
    7,990.88x = 10,148.63 × 10,148.63
  4. Step 4: Simplify right side
    7,990.88x = 102,994,589.39
  5. Step 5: Solve for x
    x = 102,994,589.39/7,990.88
  6. Step 6: Final answer
    x = 12,889.03

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.