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Finding the Third Proportional to 1,138.11 and 1,536.94

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Solution

The third proportional to 1,138.11 and 1,536.94 is: 2,075.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138.11 : 1,536.94 = 1,536.94 : x
  2. Step 2: Convert to fraction form
    1,138.11/1,536.94 = 1,536.94/x
  3. Step 3: Cross multiply
    1,138.11x = 1,536.94 × 1,536.94
  4. Step 4: Simplify right side
    1,138.11x = 2,362,194.89
  5. Step 5: Solve for x
    x = 2,362,194.89/1,138.11
  6. Step 6: Final answer
    x = 2,075.54

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.