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Finding the Third Proportional to 5,303.81 and 8,138.81

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Solution

The third proportional to 5,303.81 and 8,138.81 is: 12,489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,303.81 : 8,138.81 = 8,138.81 : x
  2. Step 2: Convert to fraction form
    5,303.81/8,138.81 = 8,138.81/x
  3. Step 3: Cross multiply
    5,303.81x = 8,138.81 × 8,138.81
  4. Step 4: Simplify right side
    5,303.81x = 66,240,268.91
  5. Step 5: Solve for x
    x = 66,240,268.91/5,303.81
  6. Step 6: Final answer
    x = 12,489.18

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.