Home / 4,121.75-5,687.65-2,442.87

Finding the Fourth Proportional to 4,121.75, 5,687.65 and 2,442.87

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Solution

The fourth proportional to 4,121.75, 5,687.65 and 2,442.87 is: 3,370.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.75 : 5,687.65 = 2,442.87 : x
  2. Step 2: Convert to fraction form
    4,121.75/5,687.65 = 2,442.87/x
  3. Step 3: Cross multiply
    4,121.75x = 5,687.65 × 2,442.87
  4. Step 4: Simplify right side
    4,121.75x = 13,894,213.94
  5. Step 5: Solve for x
    x = 13,894,213.94/4,121.75
  6. Step 6: Final answer
    x = 3,370.95

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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.