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Finding the Fourth Proportional to 3,153.98, 4,730.94 and 845.48

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Solution

The fourth proportional to 3,153.98, 4,730.94 and 845.48 is: 1,268.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.98 : 4,730.94 = 845.48 : x
  2. Step 2: Convert to fraction form
    3,153.98/4,730.94 = 845.48/x
  3. Step 3: Cross multiply
    3,153.98x = 4,730.94 × 845.48
  4. Step 4: Simplify right side
    3,153.98x = 3,999,915.15
  5. Step 5: Solve for x
    x = 3,999,915.15/3,153.98
  6. Step 6: Final answer
    x = 1,268.21

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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.