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Finding the Third Proportional to 1,290.94 and 2,783.11

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Solution

The third proportional to 1,290.94 and 2,783.11 is: 6,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.94 : 2,783.11 = 2,783.11 : x
  2. Step 2: Convert to fraction form
    1,290.94/2,783.11 = 2,783.11/x
  3. Step 3: Cross multiply
    1,290.94x = 2,783.11 × 2,783.11
  4. Step 4: Simplify right side
    1,290.94x = 7,745,697.79
  5. Step 5: Solve for x
    x = 7,745,697.79/1,290.94
  6. Step 6: Final answer
    x = 6,000.06

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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.