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Finding the Third Proportional to 1,281.50 and 3,095

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Solution

The third proportional to 1,281.50 and 3,095 is: 7,474.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.50 : 3,095 = 3,095 : x
  2. Step 2: Convert to fraction form
    1,281.50/3,095 = 3,095/x
  3. Step 3: Cross multiply
    1,281.50x = 3,095 × 3,095
  4. Step 4: Simplify right side
    1,281.50x = 9,579,025
  5. Step 5: Solve for x
    x = 9,579,025/1,281.50
  6. Step 6: Final answer
    x = 7,474.85

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.