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Finding the Third Proportional to 1,235.81 and 1,859.91

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Solution

The third proportional to 1,235.81 and 1,859.91 is: 2,799.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.81 : 1,859.91 = 1,859.91 : x
  2. Step 2: Convert to fraction form
    1,235.81/1,859.91 = 1,859.91/x
  3. Step 3: Cross multiply
    1,235.81x = 1,859.91 × 1,859.91
  4. Step 4: Simplify right side
    1,235.81x = 3,459,251.26
  5. Step 5: Solve for x
    x = 3,459,251.26/1,235.81
  6. Step 6: Final answer
    x = 2,799.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.