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Finding the Third Proportional to 5,430.80 and 6,228.14

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Solution

The third proportional to 5,430.80 and 6,228.14 is: 7,142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.80 : 6,228.14 = 6,228.14 : x
  2. Step 2: Convert to fraction form
    5,430.80/6,228.14 = 6,228.14/x
  3. Step 3: Cross multiply
    5,430.80x = 6,228.14 × 6,228.14
  4. Step 4: Simplify right side
    5,430.80x = 38,789,735.64
  5. Step 5: Solve for x
    x = 38,789,735.64/5,430.80
  6. Step 6: Final answer
    x = 7,142.55

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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.