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Finding the Third Proportional to 1,392 and 3,000

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Solution

The third proportional to 1,392 and 3,000 is: 6,465.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392 : 3,000 = 3,000 : x
  2. Step 2: Convert to fraction form
    1,392/3,000 = 3,000/x
  3. Step 3: Cross multiply
    1,392x = 3,000 × 3,000
  4. Step 4: Simplify right side
    1,392x = 9,000,000
  5. Step 5: Solve for x
    x = 9,000,000/1,392
  6. Step 6: Final answer
    x = 6,465.52

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.