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Finding the Third Proportional to 5,426 and 9,787

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Solution

The third proportional to 5,426 and 9,787 is: 17,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426 : 9,787 = 9,787 : x
  2. Step 2: Convert to fraction form
    5,426/9,787 = 9,787/x
  3. Step 3: Cross multiply
    5,426x = 9,787 × 9,787
  4. Step 4: Simplify right side
    5,426x = 95,785,369
  5. Step 5: Solve for x
    x = 95,785,369/5,426
  6. Step 6: Final answer
    x = 17,653.04

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.