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Finding the Third Proportional to 2,445 and 6,630

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Solution

The third proportional to 2,445 and 6,630 is: 17,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,445 : 6,630 = 6,630 : x
  2. Step 2: Convert to fraction form
    2,445/6,630 = 6,630/x
  3. Step 3: Cross multiply
    2,445x = 6,630 × 6,630
  4. Step 4: Simplify right side
    2,445x = 43,956,900
  5. Step 5: Solve for x
    x = 43,956,900/2,445
  6. Step 6: Final answer
    x = 17,978.28

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Why These Related Problems?

These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.