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Finding the Fourth Proportional to 3,858.74, 5,324.64 and 2,850.98

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Solution

The fourth proportional to 3,858.74, 5,324.64 and 2,850.98 is: 3,934.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.74 : 5,324.64 = 2,850.98 : x
  2. Step 2: Convert to fraction form
    3,858.74/5,324.64 = 2,850.98/x
  3. Step 3: Cross multiply
    3,858.74x = 5,324.64 × 2,850.98
  4. Step 4: Simplify right side
    3,858.74x = 15,180,415.52
  5. Step 5: Solve for x
    x = 15,180,415.52/3,858.74
  6. Step 6: Final answer
    x = 3,934.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.