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Finding the Fourth Proportional to 3,167.87, 4,372.88 and 2,835.71

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Solution

The fourth proportional to 3,167.87, 4,372.88 and 2,835.71 is: 3,914.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.87 : 4,372.88 = 2,835.71 : x
  2. Step 2: Convert to fraction form
    3,167.87/4,372.88 = 2,835.71/x
  3. Step 3: Cross multiply
    3,167.87x = 4,372.88 × 2,835.71
  4. Step 4: Simplify right side
    3,167.87x = 12,400,219.54
  5. Step 5: Solve for x
    x = 12,400,219.54/3,167.87
  6. Step 6: Final answer
    x = 3,914.37

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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.