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Finding the Third Proportional to 7,148 and 8,360

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Solution

The third proportional to 7,148 and 8,360 is: 9,777.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148 : 8,360 = 8,360 : x
  2. Step 2: Convert to fraction form
    7,148/8,360 = 8,360/x
  3. Step 3: Cross multiply
    7,148x = 8,360 × 8,360
  4. Step 4: Simplify right side
    7,148x = 69,889,600
  5. Step 5: Solve for x
    x = 69,889,600/7,148
  6. Step 6: Final answer
    x = 9,777.50

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Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.