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Finding the Third Proportional to 4,380 and 6,510

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Solution

The third proportional to 4,380 and 6,510 is: 9,675.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,380 : 6,510 = 6,510 : x
  2. Step 2: Convert to fraction form
    4,380/6,510 = 6,510/x
  3. Step 3: Cross multiply
    4,380x = 6,510 × 6,510
  4. Step 4: Simplify right side
    4,380x = 42,380,100
  5. Step 5: Solve for x
    x = 42,380,100/4,380
  6. Step 6: Final answer
    x = 9,675.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.