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Finding the Third Proportional to 5.10 and 7.65

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Solution

The third proportional to 5.10 and 7.65 is: 11.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.10 : 7.65 = 7.65 : x
  2. Step 2: Convert to fraction form
    5.10/7.65 = 7.65/x
  3. Step 3: Cross multiply
    5.10x = 7.65 × 7.65
  4. Step 4: Simplify right side
    5.10x = 58.57
  5. Step 5: Solve for x
    x = 58.57/5.10
  6. Step 6: Final answer
    x = 11.48

Related Problems

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.