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Finding the Fourth Proportional to 2,581.50, 3,872.28 and 633.70

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Solution

The fourth proportional to 2,581.50, 3,872.28 and 633.70 is: 950.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.50 : 3,872.28 = 633.70 : x
  2. Step 2: Convert to fraction form
    2,581.50/3,872.28 = 633.70/x
  3. Step 3: Cross multiply
    2,581.50x = 3,872.28 × 633.70
  4. Step 4: Simplify right side
    2,581.50x = 2,453,858.38
  5. Step 5: Solve for x
    x = 2,453,858.38/2,581.50
  6. Step 6: Final answer
    x = 950.56

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1.5x scale

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.