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Finding the Third Proportional to 1,428.75 and 3,029.06

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Solution

The third proportional to 1,428.75 and 3,029.06 is: 6,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.75 : 3,029.06 = 3,029.06 : x
  2. Step 2: Convert to fraction form
    1,428.75/3,029.06 = 3,029.06/x
  3. Step 3: Cross multiply
    1,428.75x = 3,029.06 × 3,029.06
  4. Step 4: Simplify right side
    1,428.75x = 9,175,219.63
  5. Step 5: Solve for x
    x = 9,175,219.63/1,428.75
  6. Step 6: Final answer
    x = 6,421.85

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.