Home / 2,771.87-3,825.18-1,889.21

Finding the Fourth Proportional to 2,771.87, 3,825.18 and 1,889.21

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Solution

The fourth proportional to 2,771.87, 3,825.18 and 1,889.21 is: 2,607.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.87 : 3,825.18 = 1,889.21 : x
  2. Step 2: Convert to fraction form
    2,771.87/3,825.18 = 1,889.21/x
  3. Step 3: Cross multiply
    2,771.87x = 3,825.18 × 1,889.21
  4. Step 4: Simplify right side
    2,771.87x = 7,226,569.58
  5. Step 5: Solve for x
    x = 7,226,569.58/2,771.87
  6. Step 6: Final answer
    x = 2,607.11

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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.