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Finding the Fourth Proportional to 1,786.60, 2,676.75 and 1,564.75

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Solution

The fourth proportional to 1,786.60, 2,676.75 and 1,564.75 is: 2,344.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786.60 : 2,676.75 = 1,564.75 : x
  2. Step 2: Convert to fraction form
    1,786.60/2,676.75 = 1,564.75/x
  3. Step 3: Cross multiply
    1,786.60x = 2,676.75 × 1,564.75
  4. Step 4: Simplify right side
    1,786.60x = 4,188,444.56
  5. Step 5: Solve for x
    x = 4,188,444.56/1,786.60
  6. Step 6: Final answer
    x = 2,344.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.