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Finding the Third Proportional to 6,139.55 and 9,215.02

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Solution

The third proportional to 6,139.55 and 9,215.02 is: 13,831.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.55 : 9,215.02 = 9,215.02 : x
  2. Step 2: Convert to fraction form
    6,139.55/9,215.02 = 9,215.02/x
  3. Step 3: Cross multiply
    6,139.55x = 9,215.02 × 9,215.02
  4. Step 4: Simplify right side
    6,139.55x = 84,916,512.97
  5. Step 5: Solve for x
    x = 84,916,512.97/6,139.55
  6. Step 6: Final answer
    x = 13,831.07

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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.