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Finding the Third Proportional to 4,276.13 and 7,718.63

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Solution

The third proportional to 4,276.13 and 7,718.63 is: 13,932.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,276.13 : 7,718.63 = 7,718.63 : x
  2. Step 2: Convert to fraction form
    4,276.13/7,718.63 = 7,718.63/x
  3. Step 3: Cross multiply
    4,276.13x = 7,718.63 × 7,718.63
  4. Step 4: Simplify right side
    4,276.13x = 59,577,171.89
  5. Step 5: Solve for x
    x = 59,577,171.89/4,276.13
  6. Step 6: Final answer
    x = 13,932.51

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.