Home / 5,121.12-7,682.31-1,834.56

Finding the Fourth Proportional to 5,121.12, 7,682.31 and 1,834.56

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Solution

The fourth proportional to 5,121.12, 7,682.31 and 1,834.56 is: 2,752.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.12 : 7,682.31 = 1,834.56 : x
  2. Step 2: Convert to fraction form
    5,121.12/7,682.31 = 1,834.56/x
  3. Step 3: Cross multiply
    5,121.12x = 7,682.31 × 1,834.56
  4. Step 4: Simplify right side
    5,121.12x = 14,093,658.63
  5. Step 5: Solve for x
    x = 14,093,658.63/5,121.12
  6. Step 6: Final answer
    x = 2,752.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.