Home / 3,800.12-5,244.05-2,121.42

Finding the Fourth Proportional to 3,800.12, 5,244.05 and 2,121.42

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Solution

The fourth proportional to 3,800.12, 5,244.05 and 2,121.42 is: 2,927.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,800.12 : 5,244.05 = 2,121.42 : x
  2. Step 2: Convert to fraction form
    3,800.12/5,244.05 = 2,121.42/x
  3. Step 3: Cross multiply
    3,800.12x = 5,244.05 × 2,121.42
  4. Step 4: Simplify right side
    3,800.12x = 11,124,821.94
  5. Step 5: Solve for x
    x = 11,124,821.94/3,800.12
  6. Step 6: Final answer
    x = 2,927.50

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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.