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Finding the Third Proportional to 1,543 and 3,709

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Solution

The third proportional to 1,543 and 3,709 is: 8,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543 : 3,709 = 3,709 : x
  2. Step 2: Convert to fraction form
    1,543/3,709 = 3,709/x
  3. Step 3: Cross multiply
    1,543x = 3,709 × 3,709
  4. Step 4: Simplify right side
    1,543x = 13,756,681
  5. Step 5: Solve for x
    x = 13,756,681/1,543
  6. Step 6: Final answer
    x = 8,915.54

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These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.