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Finding the Fourth Proportional to 2,672.37, 4,008.54 and 823.44

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Solution

The fourth proportional to 2,672.37, 4,008.54 and 823.44 is: 1,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.37 : 4,008.54 = 823.44 : x
  2. Step 2: Convert to fraction form
    2,672.37/4,008.54 = 823.44/x
  3. Step 3: Cross multiply
    2,672.37x = 4,008.54 × 823.44
  4. Step 4: Simplify right side
    2,672.37x = 3,300,792.18
  5. Step 5: Solve for x
    x = 3,300,792.18/2,672.37
  6. Step 6: Final answer
    x = 1,235.16

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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.