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Finding the Third Proportional to 7,605 and 17,979.75

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Solution

The third proportional to 7,605 and 17,979.75 is: 42,507.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,605 : 17,979.75 = 17,979.75 : x
  2. Step 2: Convert to fraction form
    7,605/17,979.75 = 17,979.75/x
  3. Step 3: Cross multiply
    7,605x = 17,979.75 × 17,979.75
  4. Step 4: Simplify right side
    7,605x = 323,271,410.06
  5. Step 5: Solve for x
    x = 323,271,410.06/7,605
  6. Step 6: Final answer
    x = 42,507.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.