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Finding the Third Proportional to 4,319.50 and 9,320

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Solution

The third proportional to 4,319.50 and 9,320 is: 20,109.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,319.50 : 9,320 = 9,320 : x
  2. Step 2: Convert to fraction form
    4,319.50/9,320 = 9,320/x
  3. Step 3: Cross multiply
    4,319.50x = 9,320 × 9,320
  4. Step 4: Simplify right side
    4,319.50x = 86,862,400
  5. Step 5: Solve for x
    x = 86,862,400/4,319.50
  6. Step 6: Final answer
    x = 20,109.36

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.