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Finding the Third Proportional to 6,979.61 and 7,569.07

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Solution

The third proportional to 6,979.61 and 7,569.07 is: 8,208.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.61 : 7,569.07 = 7,569.07 : x
  2. Step 2: Convert to fraction form
    6,979.61/7,569.07 = 7,569.07/x
  3. Step 3: Cross multiply
    6,979.61x = 7,569.07 × 7,569.07
  4. Step 4: Simplify right side
    6,979.61x = 57,290,825.40
  5. Step 5: Solve for x
    x = 57,290,825.40/6,979.61
  6. Step 6: Final answer
    x = 8,208.32

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.