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Finding the Third Proportional to 8,484.75 and 12,120.05

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Solution

The third proportional to 8,484.75 and 12,120.05 is: 17,312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484.75 : 12,120.05 = 12,120.05 : x
  2. Step 2: Convert to fraction form
    8,484.75/12,120.05 = 12,120.05/x
  3. Step 3: Cross multiply
    8,484.75x = 12,120.05 × 12,120.05
  4. Step 4: Simplify right side
    8,484.75x = 146,895,536.25
  5. Step 5: Solve for x
    x = 146,895,536.25/8,484.75
  6. Step 6: Final answer
    x = 17,312.89

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.