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Finding the Third Proportional to 2,931 and 6,145.50

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Solution

The third proportional to 2,931 and 6,145.50 is: 12,885.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931 : 6,145.50 = 6,145.50 : x
  2. Step 2: Convert to fraction form
    2,931/6,145.50 = 6,145.50/x
  3. Step 3: Cross multiply
    2,931x = 6,145.50 × 6,145.50
  4. Step 4: Simplify right side
    2,931x = 37,767,170.25
  5. Step 5: Solve for x
    x = 37,767,170.25/2,931
  6. Step 6: Final answer
    x = 12,885.42

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.