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Finding the Third Proportional to 5,440 and 8,500

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Solution

The third proportional to 5,440 and 8,500 is: 13,281.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440 : 8,500 = 8,500 : x
  2. Step 2: Convert to fraction form
    5,440/8,500 = 8,500/x
  3. Step 3: Cross multiply
    5,440x = 8,500 × 8,500
  4. Step 4: Simplify right side
    5,440x = 72,250,000
  5. Step 5: Solve for x
    x = 72,250,000/5,440
  6. Step 6: Final answer
    x = 13,281.25

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.