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Finding the Fourth Proportional to 2,671.61, 4,007.54 and 823.98

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Solution

The fourth proportional to 2,671.61, 4,007.54 and 823.98 is: 1,236.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.61 : 4,007.54 = 823.98 : x
  2. Step 2: Convert to fraction form
    2,671.61/4,007.54 = 823.98/x
  3. Step 3: Cross multiply
    2,671.61x = 4,007.54 × 823.98
  4. Step 4: Simplify right side
    2,671.61x = 3,302,149.90
  5. Step 5: Solve for x
    x = 3,302,149.90/2,671.61
  6. Step 6: Final answer
    x = 1,236.02

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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.