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Finding the Third Proportional to 2,890.13 and 6,218.63

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Solution

The third proportional to 2,890.13 and 6,218.63 is: 13,380.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.13 : 6,218.63 = 6,218.63 : x
  2. Step 2: Convert to fraction form
    2,890.13/6,218.63 = 6,218.63/x
  3. Step 3: Cross multiply
    2,890.13x = 6,218.63 × 6,218.63
  4. Step 4: Simplify right side
    2,890.13x = 38,671,296.89
  5. Step 5: Solve for x
    x = 38,671,296.89/2,890.13
  6. Step 6: Final answer
    x = 13,380.49

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.