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Finding the Fourth Proportional to 2,782.55, 4,173.83 and 834.81

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Solution

The fourth proportional to 2,782.55, 4,173.83 and 834.81 is: 1,252.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.55 : 4,173.83 = 834.81 : x
  2. Step 2: Convert to fraction form
    2,782.55/4,173.83 = 834.81/x
  3. Step 3: Cross multiply
    2,782.55x = 4,173.83 × 834.81
  4. Step 4: Simplify right side
    2,782.55x = 3,484,338.33
  5. Step 5: Solve for x
    x = 3,484,338.33/2,782.55
  6. Step 6: Final answer
    x = 1,252.21

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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.