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Finding the Third Proportional to 2,909.67 and 6,280.66

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Solution

The third proportional to 2,909.67 and 6,280.66 is: 13,557.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.67 : 6,280.66 = 6,280.66 : x
  2. Step 2: Convert to fraction form
    2,909.67/6,280.66 = 6,280.66/x
  3. Step 3: Cross multiply
    2,909.67x = 6,280.66 × 6,280.66
  4. Step 4: Simplify right side
    2,909.67x = 39,446,741.07
  5. Step 5: Solve for x
    x = 39,446,741.07/2,909.67
  6. Step 6: Final answer
    x = 13,557.11

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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.