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Finding the Third Proportional to 1,972.13 and 3,047.63

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Solution

The third proportional to 1,972.13 and 3,047.63 is: 4,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.13 : 3,047.63 = 3,047.63 : x
  2. Step 2: Convert to fraction form
    1,972.13/3,047.63 = 3,047.63/x
  3. Step 3: Cross multiply
    1,972.13x = 3,047.63 × 3,047.63
  4. Step 4: Simplify right side
    1,972.13x = 9,288,018.14
  5. Step 5: Solve for x
    x = 9,288,018.14/1,972.13
  6. Step 6: Final answer
    x = 4,709.65

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.