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Finding the Third Proportional to 5,390 and 6,150

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Solution

The third proportional to 5,390 and 6,150 is: 7,017.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390 : 6,150 = 6,150 : x
  2. Step 2: Convert to fraction form
    5,390/6,150 = 6,150/x
  3. Step 3: Cross multiply
    5,390x = 6,150 × 6,150
  4. Step 4: Simplify right side
    5,390x = 37,822,500
  5. Step 5: Solve for x
    x = 37,822,500/5,390
  6. Step 6: Final answer
    x = 7,017.16

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.