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Finding the Third Proportional to 3,130.75 and 4,376.75

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Solution

The third proportional to 3,130.75 and 4,376.75 is: 6,118.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.75 : 4,376.75 = 4,376.75 : x
  2. Step 2: Convert to fraction form
    3,130.75/4,376.75 = 4,376.75/x
  3. Step 3: Cross multiply
    3,130.75x = 4,376.75 × 4,376.75
  4. Step 4: Simplify right side
    3,130.75x = 19,155,940.56
  5. Step 5: Solve for x
    x = 19,155,940.56/3,130.75
  6. Step 6: Final answer
    x = 6,118.64

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.