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Finding the Third Proportional to 935.72 and 1,407.80

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Solution

The third proportional to 935.72 and 1,407.80 is: 2,118.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.72 : 1,407.80 = 1,407.80 : x
  2. Step 2: Convert to fraction form
    935.72/1,407.80 = 1,407.80/x
  3. Step 3: Cross multiply
    935.72x = 1,407.80 × 1,407.80
  4. Step 4: Simplify right side
    935.72x = 1,981,892.04
  5. Step 5: Solve for x
    x = 1,981,892.04/935.72
  6. Step 6: Final answer
    x = 2,118.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.