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Finding the Third Proportional to 6,979.50 and 11,130.75

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Solution

The third proportional to 6,979.50 and 11,130.75 is: 17,751.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.50 : 11,130.75 = 11,130.75 : x
  2. Step 2: Convert to fraction form
    6,979.50/11,130.75 = 11,130.75/x
  3. Step 3: Cross multiply
    6,979.50x = 11,130.75 × 11,130.75
  4. Step 4: Simplify right side
    6,979.50x = 123,893,595.56
  5. Step 5: Solve for x
    x = 123,893,595.56/6,979.50
  6. Step 6: Final answer
    x = 17,751.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.