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Finding the Third Proportional to 7,140 and 8,592

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Solution

The third proportional to 7,140 and 8,592 is: 10,339.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140 : 8,592 = 8,592 : x
  2. Step 2: Convert to fraction form
    7,140/8,592 = 8,592/x
  3. Step 3: Cross multiply
    7,140x = 8,592 × 8,592
  4. Step 4: Simplify right side
    7,140x = 73,822,464
  5. Step 5: Solve for x
    x = 73,822,464/7,140
  6. Step 6: Final answer
    x = 10,339.28

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Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.