Home / 2,311.97-3,190.57-1,317.35

Finding the Fourth Proportional to 2,311.97, 3,190.57 and 1,317.35

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Solution

The fourth proportional to 2,311.97, 3,190.57 and 1,317.35 is: 1,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.97 : 3,190.57 = 1,317.35 : x
  2. Step 2: Convert to fraction form
    2,311.97/3,190.57 = 1,317.35/x
  3. Step 3: Cross multiply
    2,311.97x = 3,190.57 × 1,317.35
  4. Step 4: Simplify right side
    2,311.97x = 4,203,102.07
  5. Step 5: Solve for x
    x = 4,203,102.07/2,311.97
  6. Step 6: Final answer
    x = 1,817.98

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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.