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Finding the Third Proportional to 5,263.31 and 8,129.53

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Solution

The third proportional to 5,263.31 and 8,129.53 is: 12,556.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,263.31 : 8,129.53 = 8,129.53 : x
  2. Step 2: Convert to fraction form
    5,263.31/8,129.53 = 8,129.53/x
  3. Step 3: Cross multiply
    5,263.31x = 8,129.53 × 8,129.53
  4. Step 4: Simplify right side
    5,263.31x = 66,089,278.34
  5. Step 5: Solve for x
    x = 66,089,278.34/5,263.31
  6. Step 6: Final answer
    x = 12,556.59

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.