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Finding the Third Proportional to 2,880 and 6,220

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Solution

The third proportional to 2,880 and 6,220 is: 13,433.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880 : 6,220 = 6,220 : x
  2. Step 2: Convert to fraction form
    2,880/6,220 = 6,220/x
  3. Step 3: Cross multiply
    2,880x = 6,220 × 6,220
  4. Step 4: Simplify right side
    2,880x = 38,688,400
  5. Step 5: Solve for x
    x = 38,688,400/2,880
  6. Step 6: Final answer
    x = 13,433.47

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.