Home / 2,311.56-3,190.62-1,317.38

Finding the Fourth Proportional to 2,311.56, 3,190.62 and 1,317.38

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Solution

The fourth proportional to 2,311.56, 3,190.62 and 1,317.38 is: 1,818.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.56 : 3,190.62 = 1,317.38 : x
  2. Step 2: Convert to fraction form
    2,311.56/3,190.62 = 1,317.38/x
  3. Step 3: Cross multiply
    2,311.56x = 3,190.62 × 1,317.38
  4. Step 4: Simplify right side
    2,311.56x = 4,203,243.02
  5. Step 5: Solve for x
    x = 4,203,243.02/2,311.56
  6. Step 6: Final answer
    x = 1,818.36

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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.