Home / 2,311.39-3,190.34-1,317.01

Finding the Fourth Proportional to 2,311.39, 3,190.34 and 1,317.01

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Solution

The fourth proportional to 2,311.39, 3,190.34 and 1,317.01 is: 1,817.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.39 : 3,190.34 = 1,317.01 : x
  2. Step 2: Convert to fraction form
    2,311.39/3,190.34 = 1,317.01/x
  3. Step 3: Cross multiply
    2,311.39x = 3,190.34 × 1,317.01
  4. Step 4: Simplify right side
    2,311.39x = 4,201,703.57
  5. Step 5: Solve for x
    x = 4,201,703.57/2,311.39
  6. Step 6: Final answer
    x = 1,817.83

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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.