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Finding the Third Proportional to 5,409 and 7,506

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Solution

The third proportional to 5,409 and 7,506 is: 10,415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409 : 7,506 = 7,506 : x
  2. Step 2: Convert to fraction form
    5,409/7,506 = 7,506/x
  3. Step 3: Cross multiply
    5,409x = 7,506 × 7,506
  4. Step 4: Simplify right side
    5,409x = 56,340,036
  5. Step 5: Solve for x
    x = 56,340,036/5,409
  6. Step 6: Final answer
    x = 10,415.98

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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.