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Finding the Third Proportional to 7,998.75 and 12,461.25

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Solution

The third proportional to 7,998.75 and 12,461.25 is: 19,413.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.75 : 12,461.25 = 12,461.25 : x
  2. Step 2: Convert to fraction form
    7,998.75/12,461.25 = 12,461.25/x
  3. Step 3: Cross multiply
    7,998.75x = 12,461.25 × 12,461.25
  4. Step 4: Simplify right side
    7,998.75x = 155,282,751.56
  5. Step 5: Solve for x
    x = 155,282,751.56/7,998.75
  6. Step 6: Final answer
    x = 19,413.38

Related Problems

Find third proportional to 3,999.38 and 6,230.63
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1.5x scale

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.