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Finding the Fourth Proportional to 1,788, 2,467.44 and 1,167

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Solution

The fourth proportional to 1,788, 2,467.44 and 1,167 is: 1,610.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788 : 2,467.44 = 1,167 : x
  2. Step 2: Convert to fraction form
    1,788/2,467.44 = 1,167/x
  3. Step 3: Cross multiply
    1,788x = 2,467.44 × 1,167
  4. Step 4: Simplify right side
    1,788x = 2,879,502.48
  5. Step 5: Solve for x
    x = 2,879,502.48/1,788
  6. Step 6: Final answer
    x = 1,610.46

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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.