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Finding the Third Proportional to 1,336 and 3,480

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Solution

The third proportional to 1,336 and 3,480 is: 9,064.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336 : 3,480 = 3,480 : x
  2. Step 2: Convert to fraction form
    1,336/3,480 = 3,480/x
  3. Step 3: Cross multiply
    1,336x = 3,480 × 3,480
  4. Step 4: Simplify right side
    1,336x = 12,110,400
  5. Step 5: Solve for x
    x = 12,110,400/1,336
  6. Step 6: Final answer
    x = 9,064.67

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Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.