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Finding the Third Proportional to 7,136 and 9,520

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Solution

The third proportional to 7,136 and 9,520 is: 12,700.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136 : 9,520 = 9,520 : x
  2. Step 2: Convert to fraction form
    7,136/9,520 = 9,520/x
  3. Step 3: Cross multiply
    7,136x = 9,520 × 9,520
  4. Step 4: Simplify right side
    7,136x = 90,630,400
  5. Step 5: Solve for x
    x = 90,630,400/7,136
  6. Step 6: Final answer
    x = 12,700.45

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.