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Finding the Third Proportional to 970 and 2,620

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Solution

The third proportional to 970 and 2,620 is: 7,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    970 : 2,620 = 2,620 : x
  2. Step 2: Convert to fraction form
    970/2,620 = 2,620/x
  3. Step 3: Cross multiply
    970x = 2,620 × 2,620
  4. Step 4: Simplify right side
    970x = 6,864,400
  5. Step 5: Solve for x
    x = 6,864,400/970
  6. Step 6: Final answer
    x = 7,076.70

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.