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Finding the Third Proportional to 5,278 and 7,543

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Solution

The third proportional to 5,278 and 7,543 is: 10,780.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278 : 7,543 = 7,543 : x
  2. Step 2: Convert to fraction form
    5,278/7,543 = 7,543/x
  3. Step 3: Cross multiply
    5,278x = 7,543 × 7,543
  4. Step 4: Simplify right side
    5,278x = 56,896,849
  5. Step 5: Solve for x
    x = 56,896,849/5,278
  6. Step 6: Final answer
    x = 10,780.00

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.