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Finding the Third Proportional to 1,113.19 and 1,582.31

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Solution

The third proportional to 1,113.19 and 1,582.31 is: 2,249.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.19 : 1,582.31 = 1,582.31 : x
  2. Step 2: Convert to fraction form
    1,113.19/1,582.31 = 1,582.31/x
  3. Step 3: Cross multiply
    1,113.19x = 1,582.31 × 1,582.31
  4. Step 4: Simplify right side
    1,113.19x = 2,503,712.85
  5. Step 5: Solve for x
    x = 2,503,712.85/1,113.19
  6. Step 6: Final answer
    x = 2,249.14

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.