Home / 2,914.70-4,370.44-1,991.30

Finding the Fourth Proportional to 2,914.70, 4,370.44 and 1,991.30

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Solution

The fourth proportional to 2,914.70, 4,370.44 and 1,991.30 is: 2,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.70 : 4,370.44 = 1,991.30 : x
  2. Step 2: Convert to fraction form
    2,914.70/4,370.44 = 1,991.30/x
  3. Step 3: Cross multiply
    2,914.70x = 4,370.44 × 1,991.30
  4. Step 4: Simplify right side
    2,914.70x = 8,702,847.87
  5. Step 5: Solve for x
    x = 8,702,847.87/2,914.70
  6. Step 6: Final answer
    x = 2,985.85

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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.