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Finding the Fourth Proportional to 2,581.79, 3,872.69 and 634.00

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Solution

The fourth proportional to 2,581.79, 3,872.69 and 634.00 is: 951.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.79 : 3,872.69 = 634.00 : x
  2. Step 2: Convert to fraction form
    2,581.79/3,872.69 = 634.00/x
  3. Step 3: Cross multiply
    2,581.79x = 3,872.69 × 634.00
  4. Step 4: Simplify right side
    2,581.79x = 2,455,277.36
  5. Step 5: Solve for x
    x = 2,455,277.36/2,581.79
  6. Step 6: Final answer
    x = 951.00

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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.