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Finding the Third Proportional to 7,690 and 8,746

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Solution

The third proportional to 7,690 and 8,746 is: 9,947.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690 : 8,746 = 8,746 : x
  2. Step 2: Convert to fraction form
    7,690/8,746 = 8,746/x
  3. Step 3: Cross multiply
    7,690x = 8,746 × 8,746
  4. Step 4: Simplify right side
    7,690x = 76,492,516
  5. Step 5: Solve for x
    x = 76,492,516/7,690
  6. Step 6: Final answer
    x = 9,947.01

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.