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Finding the Third Proportional to 5,486.25 and 8,486.63

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Solution

The third proportional to 5,486.25 and 8,486.63 is: 13,127.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.25 : 8,486.63 = 8,486.63 : x
  2. Step 2: Convert to fraction form
    5,486.25/8,486.63 = 8,486.63/x
  3. Step 3: Cross multiply
    5,486.25x = 8,486.63 × 8,486.63
  4. Step 4: Simplify right side
    5,486.25x = 72,022,803.89
  5. Step 5: Solve for x
    x = 72,022,803.89/5,486.25
  6. Step 6: Final answer
    x = 13,127.87

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.