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Finding the Third Proportional to 7,176 and 11,160

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Solution

The third proportional to 7,176 and 11,160 is: 17,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176 : 11,160 = 11,160 : x
  2. Step 2: Convert to fraction form
    7,176/11,160 = 11,160/x
  3. Step 3: Cross multiply
    7,176x = 11,160 × 11,160
  4. Step 4: Simplify right side
    7,176x = 124,545,600
  5. Step 5: Solve for x
    x = 124,545,600/7,176
  6. Step 6: Final answer
    x = 17,355.85

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.