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Finding the Third Proportional to 1,520 and 3,340

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Solution

The third proportional to 1,520 and 3,340 is: 7,339.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520 : 3,340 = 3,340 : x
  2. Step 2: Convert to fraction form
    1,520/3,340 = 3,340/x
  3. Step 3: Cross multiply
    1,520x = 3,340 × 3,340
  4. Step 4: Simplify right side
    1,520x = 11,155,600
  5. Step 5: Solve for x
    x = 11,155,600/1,520
  6. Step 6: Final answer
    x = 7,339.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.