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Finding the Third Proportional to 6,478 and 7,030

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Solution

The third proportional to 6,478 and 7,030 is: 7,629.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478 : 7,030 = 7,030 : x
  2. Step 2: Convert to fraction form
    6,478/7,030 = 7,030/x
  3. Step 3: Cross multiply
    6,478x = 7,030 × 7,030
  4. Step 4: Simplify right side
    6,478x = 49,420,900
  5. Step 5: Solve for x
    x = 49,420,900/6,478
  6. Step 6: Final answer
    x = 7,629.04

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.