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Finding the Third Proportional to 6,415.31 and 9,856.13

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Solution

The third proportional to 6,415.31 and 9,856.13 is: 15,142.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.31 : 9,856.13 = 9,856.13 : x
  2. Step 2: Convert to fraction form
    6,415.31/9,856.13 = 9,856.13/x
  3. Step 3: Cross multiply
    6,415.31x = 9,856.13 × 9,856.13
  4. Step 4: Simplify right side
    6,415.31x = 97,143,200.02
  5. Step 5: Solve for x
    x = 97,143,200.02/6,415.31
  6. Step 6: Final answer
    x = 15,142.40

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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.