Home / 3,131.88-4,317.60-2,236.08

Finding the Fourth Proportional to 3,131.88, 4,317.60 and 2,236.08

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Solution

The fourth proportional to 3,131.88, 4,317.60 and 2,236.08 is: 3,082.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.88 : 4,317.60 = 2,236.08 : x
  2. Step 2: Convert to fraction form
    3,131.88/4,317.60 = 2,236.08/x
  3. Step 3: Cross multiply
    3,131.88x = 4,317.60 × 2,236.08
  4. Step 4: Simplify right side
    3,131.88x = 9,654,499.01
  5. Step 5: Solve for x
    x = 9,654,499.01/3,131.88
  6. Step 6: Final answer
    x = 3,082.65

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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.