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Finding the Third Proportional to 6,280 and 6,856

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Solution

The third proportional to 6,280 and 6,856 is: 7,484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,280 : 6,856 = 6,856 : x
  2. Step 2: Convert to fraction form
    6,280/6,856 = 6,856/x
  3. Step 3: Cross multiply
    6,280x = 6,856 × 6,856
  4. Step 4: Simplify right side
    6,280x = 47,004,736
  5. Step 5: Solve for x
    x = 47,004,736/6,280
  6. Step 6: Final answer
    x = 7,484.83

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1.5x scale

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.