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Finding the Third Proportional to 869.63 and 1,864.13

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Solution

The third proportional to 869.63 and 1,864.13 is: 3,995.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    869.63 : 1,864.13 = 1,864.13 : x
  2. Step 2: Convert to fraction form
    869.63/1,864.13 = 1,864.13/x
  3. Step 3: Cross multiply
    869.63x = 1,864.13 × 1,864.13
  4. Step 4: Simplify right side
    869.63x = 3,474,962.02
  5. Step 5: Solve for x
    x = 3,474,962.02/869.63
  6. Step 6: Final answer
    x = 3,995.93

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.