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Finding the Third Proportional to 2,742.75 and 6,445.13

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Solution

The third proportional to 2,742.75 and 6,445.13 is: 15,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.75 : 6,445.13 = 6,445.13 : x
  2. Step 2: Convert to fraction form
    2,742.75/6,445.13 = 6,445.13/x
  3. Step 3: Cross multiply
    2,742.75x = 6,445.13 × 6,445.13
  4. Step 4: Simplify right side
    2,742.75x = 41,539,636.27
  5. Step 5: Solve for x
    x = 41,539,636.27/2,742.75
  6. Step 6: Final answer
    x = 15,145.25

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.