Home / 3,131.42-4,324.91-2,134.99

Finding the Fourth Proportional to 3,131.42, 4,324.91 and 2,134.99

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Solution

The fourth proportional to 3,131.42, 4,324.91 and 2,134.99 is: 2,948.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.42 : 4,324.91 = 2,134.99 : x
  2. Step 2: Convert to fraction form
    3,131.42/4,324.91 = 2,134.99/x
  3. Step 3: Cross multiply
    3,131.42x = 4,324.91 × 2,134.99
  4. Step 4: Simplify right side
    3,131.42x = 9,233,639.60
  5. Step 5: Solve for x
    x = 9,233,639.60/3,131.42
  6. Step 6: Final answer
    x = 2,948.71

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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.