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Finding the Third Proportional to 809.63 and 1,777.88

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Solution

The third proportional to 809.63 and 1,777.88 is: 3,904.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    809.63 : 1,777.88 = 1,777.88 : x
  2. Step 2: Convert to fraction form
    809.63/1,777.88 = 1,777.88/x
  3. Step 3: Cross multiply
    809.63x = 1,777.88 × 1,777.88
  4. Step 4: Simplify right side
    809.63x = 3,160,839.52
  5. Step 5: Solve for x
    x = 3,160,839.52/809.63
  6. Step 6: Final answer
    x = 3,904.08

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.