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Finding the Third Proportional to 1,866.64 and 2,712.39

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Solution

The third proportional to 1,866.64 and 2,712.39 is: 3,941.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.64 : 2,712.39 = 2,712.39 : x
  2. Step 2: Convert to fraction form
    1,866.64/2,712.39 = 2,712.39/x
  3. Step 3: Cross multiply
    1,866.64x = 2,712.39 × 2,712.39
  4. Step 4: Simplify right side
    1,866.64x = 7,357,073.50
  5. Step 5: Solve for x
    x = 7,357,073.50/1,866.64
  6. Step 6: Final answer
    x = 3,941.35

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.