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Finding the Third Proportional to 5,230 and 7,818

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Solution

The third proportional to 5,230 and 7,818 is: 11,686.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230 : 7,818 = 7,818 : x
  2. Step 2: Convert to fraction form
    5,230/7,818 = 7,818/x
  3. Step 3: Cross multiply
    5,230x = 7,818 × 7,818
  4. Step 4: Simplify right side
    5,230x = 61,121,124
  5. Step 5: Solve for x
    x = 61,121,124/5,230
  6. Step 6: Final answer
    x = 11,686.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.