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Finding the Third Proportional to 5,411.81 and 6,216.75

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Solution

The third proportional to 5,411.81 and 6,216.75 is: 7,141.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.81 : 6,216.75 = 6,216.75 : x
  2. Step 2: Convert to fraction form
    5,411.81/6,216.75 = 6,216.75/x
  3. Step 3: Cross multiply
    5,411.81x = 6,216.75 × 6,216.75
  4. Step 4: Simplify right side
    5,411.81x = 38,647,980.56
  5. Step 5: Solve for x
    x = 38,647,980.56/5,411.81
  6. Step 6: Final answer
    x = 7,141.41

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.