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Finding the Third Proportional to 1,438.07 and 3,116.76

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Solution

The third proportional to 1,438.07 and 3,116.76 is: 6,755.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.07 : 3,116.76 = 3,116.76 : x
  2. Step 2: Convert to fraction form
    1,438.07/3,116.76 = 3,116.76/x
  3. Step 3: Cross multiply
    1,438.07x = 3,116.76 × 3,116.76
  4. Step 4: Simplify right side
    1,438.07x = 9,714,191.44
  5. Step 5: Solve for x
    x = 9,714,191.44/1,438.07
  6. Step 6: Final answer
    x = 6,755.04

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.