Home / 2,682.45-4,024.31-1,121.58

Finding the Fourth Proportional to 2,682.45, 4,024.31 and 1,121.58

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Solution

The fourth proportional to 2,682.45, 4,024.31 and 1,121.58 is: 1,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,682.45 : 4,024.31 = 1,121.58 : x
  2. Step 2: Convert to fraction form
    2,682.45/4,024.31 = 1,121.58/x
  3. Step 3: Cross multiply
    2,682.45x = 4,024.31 × 1,121.58
  4. Step 4: Simplify right side
    2,682.45x = 4,513,585.61
  5. Step 5: Solve for x
    x = 4,513,585.61/2,682.45
  6. Step 6: Final answer
    x = 1,682.64

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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.