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Finding the Third Proportional to 1,528 and 3,179

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Solution

The third proportional to 1,528 and 3,179 is: 6,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528 : 3,179 = 3,179 : x
  2. Step 2: Convert to fraction form
    1,528/3,179 = 3,179/x
  3. Step 3: Cross multiply
    1,528x = 3,179 × 3,179
  4. Step 4: Simplify right side
    1,528x = 10,106,041
  5. Step 5: Solve for x
    x = 10,106,041/1,528
  6. Step 6: Final answer
    x = 6,613.90

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.