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Finding the Third Proportional to 4,070 and 5,657

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Solution

The third proportional to 4,070 and 5,657 is: 7,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,070 : 5,657 = 5,657 : x
  2. Step 2: Convert to fraction form
    4,070/5,657 = 5,657/x
  3. Step 3: Cross multiply
    4,070x = 5,657 × 5,657
  4. Step 4: Simplify right side
    4,070x = 32,001,649
  5. Step 5: Solve for x
    x = 32,001,649/4,070
  6. Step 6: Final answer
    x = 7,862.81

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.