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Finding the Fourth Proportional to 2,672.48, 4,008.37 and 823.66

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Solution

The fourth proportional to 2,672.48, 4,008.37 and 823.66 is: 1,235.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.48 : 4,008.37 = 823.66 : x
  2. Step 2: Convert to fraction form
    2,672.48/4,008.37 = 823.66/x
  3. Step 3: Cross multiply
    2,672.48x = 4,008.37 × 823.66
  4. Step 4: Simplify right side
    2,672.48x = 3,301,509.87
  5. Step 5: Solve for x
    x = 3,301,509.87/2,672.48
  6. Step 6: Final answer
    x = 1,235.37

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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.