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Finding the Fourth Proportional to 1,786.52, 2,459.57 and 1,553.51

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Solution

The fourth proportional to 1,786.52, 2,459.57 and 1,553.51 is: 2,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.52 : 2,459.57 = 1,553.51 : x
  2. Step 2: Convert to fraction form
    1,786.52/2,459.57 = 1,553.51/x
  3. Step 3: Cross multiply
    1,786.52x = 2,459.57 × 1,553.51
  4. Step 4: Simplify right side
    1,786.52x = 3,820,964.97
  5. Step 5: Solve for x
    x = 3,820,964.97/1,786.52
  6. Step 6: Final answer
    x = 2,138.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.