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Finding the Third Proportional to 1,160 and 1,721.75

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Solution

The third proportional to 1,160 and 1,721.75 is: 2,555.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160 : 1,721.75 = 1,721.75 : x
  2. Step 2: Convert to fraction form
    1,160/1,721.75 = 1,721.75/x
  3. Step 3: Cross multiply
    1,160x = 1,721.75 × 1,721.75
  4. Step 4: Simplify right side
    1,160x = 2,964,423.06
  5. Step 5: Solve for x
    x = 2,964,423.06/1,160
  6. Step 6: Final answer
    x = 2,555.54

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.