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Finding the Third Proportional to 1,988 and 3,535

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Solution

The third proportional to 1,988 and 3,535 is: 6,285.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988 : 3,535 = 3,535 : x
  2. Step 2: Convert to fraction form
    1,988/3,535 = 3,535/x
  3. Step 3: Cross multiply
    1,988x = 3,535 × 3,535
  4. Step 4: Simplify right side
    1,988x = 12,496,225
  5. Step 5: Solve for x
    x = 12,496,225/1,988
  6. Step 6: Final answer
    x = 6,285.83

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.