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Finding the Third Proportional to 1,158 and 2,521

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Solution

The third proportional to 1,158 and 2,521 is: 5,488.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158 : 2,521 = 2,521 : x
  2. Step 2: Convert to fraction form
    1,158/2,521 = 2,521/x
  3. Step 3: Cross multiply
    1,158x = 2,521 × 2,521
  4. Step 4: Simplify right side
    1,158x = 6,355,441
  5. Step 5: Solve for x
    x = 6,355,441/1,158
  6. Step 6: Final answer
    x = 5,488.29

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.