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Finding the Third Proportional to 1,186.31 and 1,569.09

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Solution

The third proportional to 1,186.31 and 1,569.09 is: 2,075.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.31 : 1,569.09 = 1,569.09 : x
  2. Step 2: Convert to fraction form
    1,186.31/1,569.09 = 1,569.09/x
  3. Step 3: Cross multiply
    1,186.31x = 1,569.09 × 1,569.09
  4. Step 4: Simplify right side
    1,186.31x = 2,462,055.20
  5. Step 5: Solve for x
    x = 2,462,055.20/1,186.31
  6. Step 6: Final answer
    x = 2,075.39

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.