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Finding the Fourth Proportional to 2,411.73, 3,616.88 and 851.45

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Solution

The fourth proportional to 2,411.73, 3,616.88 and 851.45 is: 1,276.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,411.73 : 3,616.88 = 851.45 : x
  2. Step 2: Convert to fraction form
    2,411.73/3,616.88 = 851.45/x
  3. Step 3: Cross multiply
    2,411.73x = 3,616.88 × 851.45
  4. Step 4: Simplify right side
    2,411.73x = 3,079,570.13
  5. Step 5: Solve for x
    x = 3,079,570.13/2,411.73
  6. Step 6: Final answer
    x = 1,276.91

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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.