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Finding the Third Proportional to 2,489.63 and 2,854.13

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Solution

The third proportional to 2,489.63 and 2,854.13 is: 3,271.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.63 : 2,854.13 = 2,854.13 : x
  2. Step 2: Convert to fraction form
    2,489.63/2,854.13 = 2,854.13/x
  3. Step 3: Cross multiply
    2,489.63x = 2,854.13 × 2,854.13
  4. Step 4: Simplify right side
    2,489.63x = 8,146,029.52
  5. Step 5: Solve for x
    x = 8,146,029.52/2,489.63
  6. Step 6: Final answer
    x = 3,271.99

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.