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Finding the Third Proportional to 1,135.69 and 2,445.19

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Solution

The third proportional to 1,135.69 and 2,445.19 is: 5,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.69 : 2,445.19 = 2,445.19 : x
  2. Step 2: Convert to fraction form
    1,135.69/2,445.19 = 2,445.19/x
  3. Step 3: Cross multiply
    1,135.69x = 2,445.19 × 2,445.19
  4. Step 4: Simplify right side
    1,135.69x = 5,978,941.91
  5. Step 5: Solve for x
    x = 5,978,941.91/1,135.69
  6. Step 6: Final answer
    x = 5,264.60

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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.