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Finding the Third Proportional to 813.94 and 1,681.88

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Solution

The third proportional to 813.94 and 1,681.88 is: 3,475.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    813.94 : 1,681.88 = 1,681.88 : x
  2. Step 2: Convert to fraction form
    813.94/1,681.88 = 1,681.88/x
  3. Step 3: Cross multiply
    813.94x = 1,681.88 × 1,681.88
  4. Step 4: Simplify right side
    813.94x = 2,828,703.52
  5. Step 5: Solve for x
    x = 2,828,703.52/813.94
  6. Step 6: Final answer
    x = 3,475.33

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.